Question: How to: Code of Conduct

Answer: This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/). For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.


Question: How to: n8n - Secure Workflow Automation for Technical Teams

Answer:
n8n is a workflow automation platform that gives technical teams the flexibility of code with the speed of no-code. With 400+ integrations, native AI capabilities, and a fair-code license, n8n lets you build powerful automations while maintaining full control over your data and deployments.

![n8n.io - Screenshot](https://raw.githubusercontent.com/n8n-io/n8n/master/assets/n8n-screenshot-readme.png)


Question: How to: Key Capabilities

Answer:
- **Code When You Need It**: Write JavaScript/Python, add npm packages, or use the visual interface
- **AI-Native Platform**: Build AI agent workflows based on LangChain with your own data and models
- **Full Control**: Self-host with our fair-code license or use our [cloud offering](https://app.n8n.cloud/login)
- **Enterprise-Ready**: Advanced permissions, SSO, and air-gapped deployments
- **Active Community**: 400+ integrations and 900+ ready-to-use [templates](https://n8n.io/workflows)


Question: How to: Quick Start

Answer:
Try n8n instantly with [npx](https://docs.n8n.io/hosting/installation/npm/) (requires [Node.js](https://nodejs.org/en/)):

```
npx n8n
```

Or deploy with [Docker](https://docs.n8n.io/hosting/installation/docker/):

```
docker volume create n8n_data
docker run -it --rm --name n8n -p 5678:5678 -v n8n_data:/home/node/.n8n docker.n8n.io/n8nio/n8n
```

Access the editor at http://localhost:5678


Question: How to: Contributing

Answer: Found a bug 🐛 or have a feature idea ✨? Check our [Contributing Guide](https://github.com/n8n-io/n8n/blob/master/CONTRIBUTING.md) to get started.


Question: How to: Join the Team

Answer: Want to shape the future of automation? Check out our [job posts](https://n8n.io/careers) and join our team!


Question: How to: What does n8n mean?

Answer:
**Short answer:** It means "nodemation" and is pronounced as n-eight-n.

**Long answer:** "I get that question quite often (more often than I expected) so I decided it is probably best to answer it here. While looking for a good name for the project with a free domain I realized very quickly that all the good ones I could think of were already taken. So, in the end, I chose nodemation. 'node-' in the sense that it uses a Node-View and that it uses Node.js and '-mation' for 'automation' which is what the project is supposed to help with. However, I did not like how long the name was and I could not imagine writing something that long every time in the CLI. That is when I then ended up on 'n8n'." - **Jan Oberhauser, Founder and CEO, n8n.io**


Question: How to: Table of Contents

Answer:
* [Major Cloud Providers' Always-Free Limits](#major-cloud-providers)
  * [Cloud management solutions](#cloud-management-solutions)
  * [Analytics, Events, and Statistics](#analytics-events-and-statistics)
  * [APIs, Data and ML](#apis-data-and-ml)
  * [Artifact Repos](#artifact-repos)
  * [BaaS](#baas)
  * [Low-code Platform](#low-code-platform)
  * [CDN and Protection](#cdn-and-protection)
  * [CI and CD](#ci-and-cd)
  * [CMS](#cms)
  * [Code Generation](#code-generation)
  * [Code Quality](#code-quality)
  * [Code Search and Browsing](#code-search-and-browsing)
  * [Crash and Exception Handling](#crash-and-exception-handling)
  * [Data Visualization on Maps](#data-visualization-on-maps)
  * [Managed Data Services](#managed-data-services)
  * [Design and UI](#design-and-ui)
  * [Design Inspiration](#design-inspiration)
  * [Dev Blogging Sites](#dev-blogging-sites)
  * [DNS](#dns)
  * [Docker Related](#docker-related)
  * [Domain](#domain)
  * [Education and Career Development](#education-and-career-development)
  * [Email](#email)
  * [Feature Toggles Management Platforms](#feature-toggles-management-platforms)
  * [Font](#font)
  * [Forms](#forms)
  * [Generative AI](#generative-ai)
  * [IaaS](#iaas)
  * [IDE and Code Editing](#ide-and-code-editing)
  * [International Mobile Number Verification API and SDK](#international-mobile-number-verification-api-and-sdk)
  * [Issue Tracking and Project Management](#issue-tracking-and-project-management)
  * [Log Management](#log-management)
  * [Mobile App Distribution and Feedback](#mobile-app-distribution-and-feedback)
  * [Management Systems](#management-system)
  * [Messaging and Streaming](#messaging-and-streaming)
  * [Miscellaneous](#miscellaneous)
  * [Monitoring](#monitoring)
  * [PaaS](#paas)
  * [Package Build System](#package-build-system)
  * [Payment and Billing Integration](#payment-and-billing-integration)
  * [Privacy Management](#privacy-management)
  * [Screenshot APIs](#screenshot-apis)
  * [Flutter Related and Building IOS Apps without Mac](#flutter-related-and-building-ios-apps-without-mac)
  * [Search](#search)
  * [Security and PKI](#security-and-pki)
  * [Authentication, Authorization, and User Management](#authentication-authorization-and-user-management)
  * [Source Code Repos](#source-code-repos)
  * [Storage and Media Processing](#storage-and-media-processing)
  * [Tunneling, WebRTC, Web Socket Servers and Other Routers](#tunneling-webrtc-web-socket-servers-and-other-routers)
  * [Testing](#testing)
  * [Tools for Teams and Collaboration](#tools-for-teams-and-collaboration)
  * [Translation Management](#translation-management)
  * [Visitor Session Recording](#visitor-session-recording)
  * [Web Hosting](#web-hosting)
  * [Commenting Platforms](#commenting-platforms)
  * [Browser based hardware emulation](#browser-based-hardware-emulation-written-in-javascript)
  * [Remote Desktop Tools](#remote-desktop-tools)
  * [Game Development](#game-development)
  * [Other Free Resources](#other-free-resources)


Question: How to: Major Cloud Providers

Answer:
* [Google Cloud Platform](https://cloud.google.com)
    * App Engine - 28 frontend instance hours per day, nine backend instance hours per day
    * Cloud Firestore - 1GB storage, 50,000 reads, 20,000 writes, 20,000 deletes per day
    * Compute Engine - 1 non-preemptible e2-micro, 30GB HDD, 5GB snapshot storage (restricted to certain regions), 1 GB network egress from North America to all region destinations (excluding China and Australia) per month
    * Cloud Storage - 5GB, 1GB network egress
    * Cloud Shell - Web-based Linux shell/primary IDE with 5GB of persistent storage. 60 hours limit per week
    * Cloud Pub/Sub - 10GB of messages per month
    * Cloud Functions - 2 million invocations per month (includes both background and HTTP invocations)
    * Cloud Run - 2 million requests per month, 360,000 GB-seconds memory, 180,000 vCPU-seconds of compute time, 1 GB network egress from North America per month
    * Google Kubernetes Engine - No cluster management fee for one zonal cluster. Each user node is charged at standard Compute Engine pricing
    * BigQuery - 1 TB of querying per month, 10 GB of storage each month
    * Cloud Build - 120 build-minutes per day
    * Cloud Source Repositories - Up to 5 Users, 50 GB Storage, 50 GB Egress
    * [Google Colab](https://colab.research.google.com/) - Free Jupyter Notebooks development environment.
    * [Firebase Studio](https://firebase.studio) Google Firebase Studio (formerly Project IDX). Online VSCode running on Google Cloud.
    * Full, detailed list - https://cloud.google.com/free

  * [Amazon Web Services](https://aws.amazon.com)
    * [CloudFront](https://aws.amazon.com/cloudfront/) - 1TB egress per month and 2M Function invocations per month
    * [CloudWatch](https://aws.amazon.com/cloudwatch/) - 10 custom metrics and ten alarms
    * [CodeBuild](https://aws.amazon.com/codebuild/) - 100min of build time per month
    * [CodeCommit](https://aws.amazon.com/codecommit/) - 5 active users,50GB storage, and 10000 requests per month
    * [CodePipeline](https://aws.amazon.com/codepipeline/) - 1 active pipeline per month
    * [DynamoDB](https://aws.amazon.com/dynamodb/) - 25GB NoSQL DB
    * [EC2](https://aws.amazon.com/ec2/) - 750 hours per month of t2.micro or t3.micro(12mo). 100GB egress per month
    * [EBS](https://aws.amazon.com/ebs/) - 30GB per month of General Purpose (SSD) or Magnetic(12mo)
    * [Elastic Load Balancing](https://aws.amazon.com/elasticloadbalancing/) - 750 hours per month(12mo)
    * [RDS](https://aws.amazon.com/rds/) - 750 hours per month of db.t2.micro, db.t3.micro, or db.t4g.micro, 20GB of General Purpose (SSD) storage, 20GB of storage backups(12 mo)
    * [S3](https://aws.amazon.com/s3/) - 5GB Standard object storage, 20K Get requests and 2K Put requests(12 mo)
    * [Glacier](https://aws.amazon.com/glacier/) - 10GB long-term object storage
    * [Lambda](https://aws.amazon.com/lambda/) - 1 million requests per month
    * [SNS](https://aws.amazon.com/sns/) - 1 million publishes per month
    * [SES](https://aws.amazon.com/ses/) - 3.000 messages per month (12mo)
    * [SQS](https://aws.amazon.com/sqs/) - 1 million messaging queue requests
    * Full, detailed list - https://aws.amazon.com/free/

  * [Microsoft Azure](https://azure.microsoft.com)
    * [Virtual Machines](https://azure.microsoft.com/services/virtual-machines/) - 1 B1S Linux VM, 1 B1S Windows VM (12mo)
    * [App Service](https://azure.microsoft.com/services/app-service/) - 10 web, mobile, or API apps (60 CPU minutes/day)
    * [Functions](https://azure.microsoft.com/services/functions/) - 1 million requests per month
    * [DevTest Labs](https://azure.microsoft.com/services/devtest-lab/) - Enable fast, easy, and lean dev-test environments
    * [Active Directory](https://azure.microsoft.com/services/active-directory/) - 500,000 objects
    * [Active Directory B2C](https://azure.microsoft.com/services/active-directory/external-identities/b2c/) - 50,000 monthly stored users
    * [Azure DevOps](https://azure.microsoft.com/services/devops/) - 5 active users, unlimited private Git repos
    * [Azure Pipelines](https://azure.microsoft.com/services/devops/pipelines/) — 10 free parallel jobs with unlimited minutes for open source for Linux, macOS, and Windows
    * [Microsoft IoT Hub](https://azure.microsoft.com/services/iot-hub/) - 8,000 messages per day
    * [Load Balancer](https://azure.microsoft.com/services/load-balancer/) - 1 free public load-balanced IP (VIP)
    * [Notification Hubs](https://azure.microsoft.com/services/notification-hubs/) - 1 million push notifications
    * [Bandwidth](https://azure.microsoft.com/pricing/details/bandwidth/) - 15GB Inbound(12mo) & 5GB egress per month
    * [Cosmos DB](https://azure.microsoft.com/services/cosmos-db/) - 25GB storage and 1000 RUs of provisioned throughput
    * [Static Web Apps](https://azure.microsoft.com/pricing/details/app-service/static/) — Build, deploy, and host static apps and serverless functions wit


Question: How to: Cloud management solutions

Answer:
* [Brainboard](https://www.brainboard.co) - Collaborative solution to visually build and manage cloud infrastructures from end-to-end.
  * [Cloud 66](https://www.cloud66.com/) - Free for personal projects (includes one deployment server, one static site), Cloud 66 gives you everything you need to build, deploy, and grow your applications on any cloud without the headache of the “server stuff.”.
  * [deployment.io](https://deployment.io) - Deployment.io helps developers automate deployments on AWS. On our free tier, a developer (single user) can deploy unlimited static sites, web services, and environments. We provide 10 job executions free per month with previews and auto-deploys included in the free tier.
  * [Pulumi](https://www.pulumi.com/) — Modern infrastructure as a code platform that allows you to use familiar programming languages and tools to build, deploy, and manage cloud infrastructure.
  * [scalr.com](https://scalr.com/) - Scalr is a Terraform Automation and COllaboration (TACO) product used to better collaboration and automation on infrastructure and configurations managed by Terraform. Full Terraform CLI support, OPA integration, and a hierarchical configuration model. No SSO tax. All features are included. Use up to 50 runs/month for free.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Source Code Repos

Answer:
* [Bitbucket](https://bitbucket.org/) — Unlimited public and private Git repos for up to 5 users with Pipelines for CI/CD
  * [Codeberg](https://codeberg.org/) — Unlimited public and private Git repos for free and open-source projects (with unlimited collaborators). Powered by [Forgejo](https://forgejo.org/). Static website hosting with [Codeberg Pages](https://codeberg.page/). CI/CD hosting with [Codeberg's CI](https://docs.codeberg.org/ci/). Translating hosting with [Codeberg Translate](https://translate.codeberg.org/). Includes Package and Container hosting, Project management, and Issue Tracking
  * [framagit.org](https://framagit.org/) — Framagit is the software forge of Framasoft based on the Gitlab software includes CI, Static Pages, Project pages and Issue tracking.
  * [GitGud](https://gitgud.io) — Unlimited private and public repositories. Free forever. Powered by GitLab & Sapphire. CI/CD not provided.
  * [GitHub](https://github.com/) — Unlimited public repositories and unlimited private repositories (with unlimited collaborators). Includes CI/CD, Development Environment, Static Hosting, Package and Container hosting, Project management and AI Copilot
  * [gitlab.com](https://about.gitlab.com/) — Unlimited public and private Git repos with up to 5 collaborators. Includes CI/CD, Static Hosting, Container Registry, Project Management and Issue Tracking
  * [heptapod.net](https://foss.heptapod.net/) — Heptapod is a friendly fork of GitLab Community Edition providing support for Mercurial
  * [Pagure.io](https://pagure.io) — Pagure.io is a free and open source software code collaboration platform for FOSS-licensed projects, Git-based
  * [pijul.com](https://pijul.com/) - Unlimited free and open source distributed version control system. Its distinctive feature is based on a sound theory of patches, which makes it easy to learn, use, and distribute. Solves many problems of git/hg/svn/darcs.
  * [projectlocker.com](https://projectlocker.com) — One free private project (Git and Subversion) with 50 MB of space
  * [RocketGit](https://rocketgit.com) — Repository Hosting based on Git. Unlimited Public and private repositories.
  * [savannah.gnu.org](https://savannah.gnu.org/) - Serves as a collaborative software development management system for free Software projects (for GNU Projects)
  * [savannah.nongnu.org](https://savannah.nongnu.org/) - Serves as a collaborative software development management system for free Software projects (for non-GNU projects)

**[⬆ Back to Top](#table-of-contents)**


Question: How to: APIs, Data, and ML

Answer:
* [Abstract API](https://www.abstractapi.com) — API suite for various use cases, including IP geolocation, gender detection, or email validation.
  * [Apify](https://www.apify.com/) — Web scraping and automation platform to create an API for any website and extract data. Ready-made scrapers, integrated proxies, and custom solutions. Free plan with $5 platform credits included every month.
  * [APITemplate.io](https://apitemplate.io) - Auto-generate images and PDF documents with a simple API or automation tools like Zapier & Airtable. No CSS/HTML is required. The free plan comes with 50 images/month and three templates.
  * [APIVerve](https://apiverve.com) - Get instant access to over 120+ APIs for free, built with quality, consistency, and reliability in mind. The free plan covers up to 50 API Tokens per month. (Possibly taken down, 2025-06-25)
  * [Arize AI](https://arize.com/) - Machine learning observability for model monitoring and root-causing issues such as data quality and performance drift. Free up to two models.
  * [Beeceptor](https://beeceptor.com) - No-code, cloud-based platform for mocking and debugging multi-protocol APIs (REST, SOAP, gRPC & GraphQL), providing instant servers with rules-based logic, CRUD & stateful mocking, proxying, and CORS management for faster integration and testing. The free plan includes 50 requests per day and provides a public dashboard/endpoint where anyone with the dashboard URL can view submitted requests and responses.
  * [BigDataCloud](https://www.bigdatacloud.com/) - Provides fast, accurate, and free (Unlimited or up to 10K-50K/month) APIs for modern web like IP Geolocation, Reverse Geocoding, Networking Insights, Email and Phone Validation, Client Info and more.
  * [Browse AI](https://www.browse.ai) — Extracting and monitoring data on the web. 1k credits per month for free, equals 1k concurrent requests.
  * [BrowserCat](https://www.browsercat.com) - Headless browser API for automation, scraping, AI agent web access, image/pdf generation, and more. Free plan with 1k requests per month.
  * [Calendarific](https://calendarific.com) - Enterprise-grade Public holiday API service for over 200 countries. The free plan includes 500 calls per month.
  * [Canopy](https://www.canopyapi.co/) - GraphQL API for Amazon.com product, search, and category data. The free plan includes 100 calls per month.
  * [CarAPI.dev](https://carapi.dev) — Comprehensive automotive data API with VIN decoding, stolen vehicle checks, vehicle valuation, inspection data, and more. Free tier includes 100 requests/month across all 9 endpoints.
  * [Cloudmersive](https://cloudmersive.com/) — Utility API platform with full access to expansive API Library including Document Conversion, Virus Scanning, and more with 600 calls/month, North America AZ only, 2.5MB maximum file size.
  * [Colaboratory](https://colab.research.google.com) — Free web-based Python notebook environment with Nvidia Tesla K80 GPU.
  * [CometML](https://www.comet.com/site/) - The MLOps platform for experiment tracking, model production management, model registry, and complete data lineage, covering your workflow from training to production. Free for individuals and academics.
  * [Commerce Layer](https://commercelayer.io) - Composable commerce API that can build, place, and manage orders from any front end. The developer plan allows 100 orders per month and up to 1,000 SKUs for free.
  * [Composio](https://composio.dev/) - Integration platform for AI Agents and LLMs. Integrate over 200+ tools across the agentic internet.
  * [Conversion Tools](https://conversiontools.io/) - Online File Converter for documents, images, video, audio, and eBooks. REST API is available. Libraries for Node.js, PHP, Python. Support files up to 50 GB (for paid plans). The free tier is limited by file size (20MB) and number of conversions (30/Day, 300/Month).
  * [Country-State-City Microservice API](https://country-state-city.rebuscando.info/) - API and Microservice to provides a wide range of information including countries, regions, provinces, cities, postal codes, and much more. The free tier includes up to 100 requests per day.
  * [Coupler](https://www.coupler.io/) - Data integration tool that syncs between apps. It can create live dashboards and reports, transform and manipulate values, and collect and back up insights. The free plan is limited to one user, data connection, data source, and data destination. Also requires manual data refresh.
  * [CraftMyPDF](https://craftmypdf.com) - Auto-Generate PDF documents from reusable templates with a drop-and-drop editor and a simple API. The free plan comes with 100 PDFs/month and three templates.
  * [Cube](https://cube.dev/) - Cube helps data engineers and application developers access data from modern data stores, organize it into consistent definitions, and deliver it to every application. The fastest way to use Cube is with Cube Cloud, which has a free tier limited to 1,000 queries per day.
  * [C


Question: How to: Artifact Repos

Answer:
* [Gemfury](https://gemfury.com) — Private and public artifact repos for Maven, PyPi, NPM, Go Module, Nuget, APT, and RPM repositories. Free for public projects.
  * [jitpack.io](https://jitpack.io/) — Maven repository for JVM and Android projects on GitHub, free for public projects.
  * [paperspace](https://www.paperspace.com/) — Build & scale AI models, Develop, train, and deploy AI applications, free plan: public projects, 5Gb storage, basic instances.
  * [RepoFlow](https://repoflow.io) - RepoFlow Simplifies package management with support for npm, PyPI, Docker, Go, Helm, and more. Try it for free with 10GB storage, 10GB bandwidth, 100 packages, and unlimited users in the cloud, or self-hosted for personal use only.
  * [RepoForge](https://repoforge.io) - Private cloud-hosted repository for Python, Debian, NPM packages and Docker registries. Free plan for open source/public projects.
  * [repsy.io](https://repsy.io) — 1 GB Free private/public Maven Repository.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Tools for Teams and Collaboration

Answer:
* [3Cols](https://3cols.com/) - A free cloud-based code snippet manager for personal and collaborative code.
  * [BookmarkOS.com](https://bookmarkos.com) - Free all-on-one bookmark manager, tab manager, and task manager in a customizable online desktop with folder collaboration.
  * [Braid](https://www.braidchat.com/) — Chat app designed for teams. Free for public access group, unlimited users, history, and integrations. also, it provides a self-hostable open-source version.
  * [Calendly](https://calendly.com) — Calendly is the tool for connecting and scheduling meetings. The free plan provides 1 Calendar connection per user and Unlimited sessions. Desktop and Mobile apps are also offered.
  * [cally.com](https://cally.com/) — Find the perfect time and date for a meeting. Simple to use, works great for small and large groups.
  * [Chanty.com](https://chanty.com/) — Chanty is another alternative to Slack. It has a free forever plan for small teams (up to 10) with unlimited public and private conversations, searchable history, unlimited 1:1 audio calls, unlimited voice messages, ten integrations, and 20 GB storage per team.
  * [DevToolLab](https://devtoollab.com) — Online developer tools offering free access to all basic tools, with the ability to auto save one entry per tool, standard processing speed, and community support.
  * [Discord](https://discord.com/) — Chat with public/private rooms. Markdown text, voice, video, and screen sharing capabilities. Free for unlimited users.
  * [Dubble](https://dubble.so/) — Free Step-by-Step Guide creator. Take screenshots, document processes and colloborate with your team. Also supports async screen recording.
  * [Duckly](https://duckly.com/) — Talk and collaborate in real time with your team. Pair programming with IDE, terminal sharing, voice, video, and screen sharing. Free for small teams.
  * [element.io](https://element.io/) — A decentralized and open-source communication tool built on Matrix. Group chats, direct messaging, encrypted file transfers, voice and video chats, and easy integration with other services.
  * [evernote.com](https://evernote.com/) — Tool for organizing information. Share your notes and work together with others
  * [Fibery](https://fibery.io/) — Connected workspace platform. Free for single users, up to 2 GB disk space.
  * [Fibo](https://fibo.dev) - A free online realtime scrum poker tool for agile teams that lets unlimited members estimate story points for faster planning.
  * [Fizzy](https://www.fizzy.do/) - Kanban-based platform for project management and issue tracking. Create public boards, set up webhooks, use card stamping, and track unlimited users — free for up to 1000 items.
  * [flat.social](https://flat.social) - Interactive customizable spaces for team meetings & happy hours socials. Unlimited meetings, free up to 8 concurrent users.
  * [flock.com](https://flock.com) — A faster way for your team to communicate. Free Unlimited Messages, Channels, Users, Apps & Integrations
  * [GitBook](https://www.gitbook.com/) — Platform for capturing and documenting technical knowledge — from product docs to internal knowledge bases and APIs. Free plan for individual developers.
  * [GitDailies](https://gitdailies.com) - Daily reports of your team's Commit and Pull Request activity on GitHub. Includes Push visualizer, peer recognition system, and custom alert builder. The free tier has unlimited users, three repos, and 3 alert configs.
  * [gitter.im](https://gitter.im/) — Chat, for GitHub. Unlimited public and private rooms, free for teams of up to 25
  * [gokanban.io](https://gokanban.io) - Syntax-based, no registration Kanban Board for fast use. Free with no limitations.
  * [Hackmd.io](https://hackmd.io/) - Real time collaboration & writing tool for markdown format docs/files. Like Google Docs but for markdown files. Free unlimited number of "notes", but the number of collaborators (invitee) for private notes & template [will be limited](https://hackmd.io/pricing).
  * [HeySpace](https://hey.space) - Task management tool with chat, calendar, timeline and video calls. Free for up to 5 users.
  * [Huly](https://huly.io/) - All-in-One Project Management Platform (alternative to Linear, Jira, Slack, Notion, Motion) - unlimited users, 10GB storage per workspace, 10GB video(audio) traffic.
  * [Keybase](https://keybase.io/) — Keybase is a FOSS alternative to Slack; it keeps everyone's chats and files safe, from families to communities to companies.
  * [Linkinize](https://linkinize.com) — Bookmark manager for teams with tagging, multi-workspaces, and collaboration. Free plan includes 4 workspaces and 10 team members.
  * [Lockitbot](https://www.lockitbot.com/) — Reserve and lock shared resources within Slack like Rooms, Dev environments , servers etc. Free for upto 2 resources
  * [meet.jit.si](https://meet.jit.si/) — One-click video conversations, and screen sharing, for free
  * [Miro](https://miro.com/) - Scalable, secure, cross-devic


Question: How to: Code Generation

Answer:
* [Appinvento](https://appinvento.io/) — A free no-code app builder. It provides complete access to the automatically generated backend source code and allows for unlimited APIs and routes. The free plan includes three projects and five tables.
* [DhiWise](https://www.dhiwise.com/) — Converts Figma designs into dynamic Flutter and React applications. Its code generation technology is designed to optimize workflows for building production-ready mobile and web experiences.
* [Karbon Sites](https://www.karbonsites.space) — An AI-powered site builder and editor that generates production-ready frontend code from text prompts, sketches, or resumes. Features include native Android (APK) export and a free tier with 5 generations per month (unlimited via custom Gemini API key).
* [Metalama](https://www.postsharp.net/metalama) — A C#-specific tool that generates boilerplate code on the fly during compilation to keep source code clean. It is free for open-source projects; its commercial-friendly free tier includes up to three aspects.
* [Supermaven](https://www.supermaven.com/) — A high-speed AI code completion plugin for VS Code, JetBrains, and Neovim. The free tier provides unlimited inline completions with a focus on ultra-low latency.
* [v0.dev](https://v0.dev/) — Created by Vercel, v0 generates copy-and-paste friendly React code using shadcn/ui and Tailwind CSS. It uses a credit system, providing 1,200 starting credits and 200 free credits monthly.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Code Quality

Answer:
* [beanstalkapp.com](https://beanstalkapp.com/) — A complete workflow to write, review, and deploy code), a free account for one user, and one repository with 100 MB of storage
  * [codacy.com](https://www.codacy.com/) — Automated code reviews for PHP, Python, Ruby, Java, JavaScript, Scala, CSS, and CoffeeScript, free for unlimited public and private repositories
  * [Codeac.io](https://www.codeac.io/infrastructure-as-code.html?ref=free-for-dev) - Automated Infrastructure as Code review tool for DevOps integrates with GitHub, Bitbucket, and GitLab (even self-hosted). In addition to standard languages, it also analyzes Ansible, Terraform, CloudFormation, Kubernetes, and more. (open-source free)
  * [codecov.io](https://codecov.io/) — Code coverage tool (SaaS), free for Open Source and one free private repo
  * [CodeFactor](https://www.codefactor.io) — Automated Code Review for Git. The free version includes unlimited users, public repositories, and one private repo.
  * [coderabbit.ai](https://coderabbit.ai) — AI-powered code review tool that integrates with GitHub/GitLab. Free tier includes 200 files/hour, 3 reviews per hour, and 50 conversations/hour. Free forever for open source projects.
  * [CodSpeed](https://codspeed.io) - Automate performance tracking in your CI pipelines. Catch performance regressions before deployment, thanks to precise and consistent metrics. Free forever for Open Source projects.
  * [coveralls.io](https://coveralls.io/) — Display test coverage reports, free for Open Source
  * [deepscan.io](https://deepscan.io) — Advanced static analysis for automatically finding runtime errors in JavaScript code, free for Open Source
  * [DeepSource](https://deepsource.io/) - DeepSource continuously analyzes source code changes, finding and fixing issues categorized under security, performance, anti-patterns, bug-risks, documentation, and style. Native integration with GitHub, GitLab, and Bitbucket.
  * [DiffText](https://difftext.com) - Instantly find the differences between two blocks of code. Completely free to use.
  * [eversql.com](https://www.eversql.com/) — EverSQL - The #1 platform for database optimization. Gain critical insights into your database and SQL queries automatically.
  * [gerrithub.io](https://review.gerrithub.io/) — Gerrit code review for GitHub repositories for free
  * [goreportcard.com](https://goreportcard.com/) — Code Quality for Go projects, free for Open Source
  * [gtmetrix.com](https://gtmetrix.com/) — Reports and thorough recommendations to optimize websites
  * [holistic.dev](https://holistic.dev/) - The #1 static code analyzer for Postgresql optimization. Performance, security, and architect database issues automatic detection service
  * [houndci.com](https://houndci.com/) — Comments on GitHub commits about code quality, free for Open Source
  * [reviewable.io](https://reviewable.io/) — Code review for GitHub repositories, free for public or personal repos.
  * [scan.coverity.com](https://scan.coverity.com/) — Static code analysis for Java, C/C++, C# and JavaScript, free for Open Source
  * [scrutinizer-ci.com](https://scrutinizer-ci.com/) — Continuous inspection platform, free for Open Source
  * [semanticdiff.com](https://app.semanticdiff.com/) — Programming language aware diff for GitHub pull requests and commits, free for public repositories
  * [shields.io](https://shields.io) — Quality metadata badges for open source projects
  * [sonarcloud.io](https://sonarcloud.io) — Automated source code analysis for Java, JavaScript, C/C++, C#, VB.NET, PHP, Objective-C, Swift, Python, Groovy and even more languages, free for Open Source

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Code Search and Browsing

Answer:
* [CodeKeep](https://codekeep.io) - Google Keep for Code Snippets. Organize, Discover, and share code snippets, featuring a powerful code screenshot tool with preset templates and a linking feature.
  * [libraries.io](https://libraries.io/) — Search and dependency update notifications for 32 different package managers, free for open source
  * [Namae](https://namae.dev/) - Search various websites like GitHub, Gitlab, Heroku, Netlify, and many more for the availability of your project name.
  * [tickgit.com](https://www.tickgit.com/) — Surfaces `TODO` comments (and other markers) to identify areas of code worth returning to for improvement.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Security and PKI

Answer:
* [aikido.dev](https://www.aikido.dev) — All-in-one appsec platform covering SCA, SAST, CSPM, DAST, Secrets, IaC, Malware, Container scanning, EOL,... Free plan includes two users, scanning of 10 repos, 1 cloud, 2 containers & 1 domain.
  * [CertKit](https://www.certkit.io/certificate-management) - Manage SSL Certificate issuance, renewal, and monitoring. Search the Certificate Transparency Logs. Free for 3 certificates and 1 user after the beta.
  * [crypteron.com](https://www.crypteron.com/) — Cloud-first, developer-friendly security platform prevents data breaches in .NET and Java applications
  * [CyberChef](https://gchq.github.io/CyberChef/) — A simple, intuitive web app for analyzing and decoding/encoding data without dealing with complex tools or programming languages. Like a Swiss army knife of cryptography & encryption. All features are free to use, with no limit. Open source if you wish to self-host.
  * [Datree](https://www.datree.io/) — Open Source CLI tool to prevent Kubernetes misconfigurations by ensuring that manifests and Helm charts follow best practices as well as your organization’s policies
  * [Dependabot](https://dependabot.com/) Automated dependency updates for Ruby, JavaScript, Python, PHP, Elixir, Rust, Java (Maven and Gradle), .NET, Go, Elm, Docker, Terraform, Git Submodules, and GitHub Actions.
  * [DJ Checkup](https://djcheckup.com) — Scan your Django site for security flaws with this free, automated checkup tool. Forked from the Pony Checkup site.
  * [Doppler](https://doppler.com/) — Universal Secrets Manager for application secrets and config, with support for syncing to various cloud providers. Free for five users with basic access controls.
  * [Dotenv](https://dotenv.org/) — Sync your .env files, quickly & securely. Stop sharing your .env files over insecure channels like Slack and email, and never lose an important .env file again. Free for up to 3 teammates.
  * [GitGuardian](https://www.gitguardian.com) — Keep secrets out of your source code with automated secrets detection and remediation. Scan your git repos for 350+ types of secrets and sensitive files – Free for individuals and teams of 25 developers or less.
  * [HasMySecretLeaked](https://gitguardian.com/hasmysecretleaked) - Search across 20 million exposed secrets in public GitHub repositories, gists, issues,and comments for Free
  * [Have I been pwned?](https://haveibeenpwned.com) — REST API for fetching the information on the breaches.
  * [hostedscan.com](https://hostedscan.com) — Online vulnerability scanner for web applications, servers, and networks. Ten free scans per month.
  * [Infisical](https://infisical.com/) — Open source platform that lets you manage developer secrets across your team and infrastructure: everywhere from local development to staging/production 3rd-party services. Free for up to 5 developers.
  * [Internet.nl](https://internet.nl) — Test for modern Internet Standards like IPv6, DNSSEC, HTTPS, DMARC, STARTTLS and DANE
  * [letsencrypt.org](https://letsencrypt.org/) — Free SSL Certificate Authority with certs trusted by all major browsers
  * [meterian.io](https://www.meterian.io/) - Monitor Java, Javascript, .NET, Scala, Ruby, and NodeJS projects for security vulnerabilities in dependencies. Free for one private project, unlimited projects for open source.
  * [Mozilla Observatory](https://observatory.mozilla.org/) — Find and fix security vulnerabilities in your site.
  * [Project Gatekeeper](https://gatekeeper.binarybiology.top/) - An All-in-One SSL Toolkit Offering various features like Private Key & CSR Generator, SSL Certificate Decoder, Certificate Matcher and Order SSL Certificate. We offer the users to generate Free SSL Certificates from Let's Encrypt, Google Trust and BuyPass using CNAME Records rather than TXT Records.
  * [Protectumus](https://protectumus.com) - Free website security check, site antivirus, and server firewall (WAF) for PHP. Email notifications for registered users in the free tier.
  * [Public Cloud Threat Intelligence](https://cloudintel.himanshuanand.com/) — High confidence Indicator of Compromise(IOC) targeting public cloud infrastructure, A portion is available on github (https://github.com/unknownhad/AWSAttacks). Full list is available via API
  * [pyup.io](https://pyup.io) — Monitor Python dependencies for security vulnerabilities and update them automatically. Free for one private project, unlimited projects for open source.
  * [qualys.com](https://www.qualys.com/community-edition) — Find web app vulnerabilities, audit for OWASP Risks
  * [Socket](https://socket.dev) — Free supply chain security for individual developers, small teams, and open source projects. Includes a free app and firewall CLI tool to protect your code from vulnerable and malicious dependencies. Detects 70+ indicators of supply chain risk.
  * [SOOS](https://soos.io) - Free, unlimited SCA scans for open-source projects. Detect and fix security threats before release. Protect your p


Question: How to: Authentication, Authorization, and User Management

Answer:
* [360username](https://360username.com/) - A free tool to search a username across 90+ social platforms to find matching profiles.
  * [Aserto](https://www.aserto.com) - Fine-grained authorization as a service for applications and APIs. Free up to 1000 MAUs and 100 authorizer instances.
  * [asgardeo.io](https://wso2.com/asgardeo) - Seamless Integration of SSO, MFA, passwordless auth and more. Includes SDKs for frontend and backend apps. Free up to 1000 MAUs and five identity providers.
  * [Auth0](https://auth0.com/) — Hosted SSO. The free plan includes 25,000 MAUs, unlimited Social Connections, a custom domain, and more.
  * [Authgear](https://www.authgear.com) - Bring Passwordless, OTPs, 2FA, SSO to your apps in minutes. All Front-end included. Free up to 5000 MAUs.
  * [Authress](https://authress.io/) — Authentication login and access control, unlimited identity providers for any project. Facebook, Google, Twitter and more. The first 1000 API calls are free.
  * [Authy](https://authy.com) - Two-factor authentication (2FA) on multiple devices, with backups. Drop-in replacement for Google Authenticator. Free for up to 100 successful authentications.
  * [Cerbos Hub](https://www.cerbos.dev/product-cerbos-hub) - A complete authorization management system for authoring, testing, and deploying access policies. Fine-grained authorization and access control, free up to 100 monthly active principals.
  * [Clerk](https://clerk.com) — User management, authentication, 2FA/MFA, prebuilt UI components for sign-in, sign-up, user profiles, and more. Free up to 10,000 monthly active users.
  * [Cloud-IAM](https://www.cloud-iam.com/) — Keycloak Identity and Access Management as a Service. Free up to 100 users and one realm.
  * [Descope](https://www.descope.com/) — Highly customizable AuthN flows, has both a no-code and API/SDK approach, Free 7,500 active users/month, 50 tenants (up to 5 SAML/SSO tenants).
  * [duo.com](https://duo.com/) — Two-factor authentication (2FA) for website or app. Free for ten users, all authentication methods, unlimited, integrations, hardware tokens.
  * [Kinde](https://kinde.com/) - Simple, robust authentication you can integrate with your product in minutes.  Everything you need to get started with 7,500 free MAU.
  * [logintc.com](https://www.logintc.com/) — Two-factor authentication (2FA) by push notifications, free for ten users, VPN, Websites, and SSH
  * [Logto](https://logto.io/) - Develop, secure, and manage user identities of your product - for both authentication and authorization. Free for up to 5,000 MAUs with open-source self-hosted option available.
  * [MojoAuth](https://mojoauth.com/) - MojoAuth makes it easy to implement Passwordless authentication on your web, mobile, or any application in minutes.
  * [Okta](https://developer.okta.com/signup/) — User management, authentication and authorization. Free for up to 100 monthly active users.
  * [Ory](https://ory.sh/) - AuthN/AuthZ/OAuth2.0/Zero Trust managed security platform. Forever free developer accounts with all security features, unlimited team members, 200 daily active users, and 25k/mo permission checks.
  * [Permit.io](https://permit.io) - Auhtorization-as-a-service provider platform enabling RBAC, ABAC, and ReBAC for scalable microservices with real-time updates and a no-code policy UI. A 1000 Monthly Active User free tier.
  * [Phase Two](https://phasetwo.io) - Keycloak Open Source Identity and Access Management. Free realm up to 1000 users, up to 10 SSO connections, leveraging Phase Two's Keycloak enhanced container which includes the [Organization](https://phasetwo.io/product/organizations/) extension.
  * [PropelAuth](https://propelauth.com) — A Sell to companies of any size immediately with a few lines of code, free up to 200 users and 10k Transactional Emails (with a watermark branding: "Powered by PropelAuth").
  * [Stack Auth](https://stack-auth.com) — Open-source authentication that doesn't suck. The most developer-friendly solution, getting you started in just five minutes. Self-hostable for free, or offers a managed SaaS version with 10k free Monthly Active Users.
  * [Stytch](https://www.stytch.com/) - An all-in-one platform that provides APIs and SDKs for authentication and fraud prevention. The free plan includes 10,000 monthly active users, unlimited organizations, 5 SSO or SCIM connections, and 1,000 M2M tokens.
  * [SuperTokens](https://supertokens.com/) - Open source user authentication that natively integrates into your app - enabling you to get started quickly while controlling the user and developer experience. Free for up to 5000 MAUs.
  * [WorkOS](https://workos.com/) - Free user management and authentication for up to 1 Million MAUs. Support email + password, social auth, Magic Auth, MFA, and more.
  * [ZITADEL Cloud](https://zitadel.com) — A turnkey user and access management that works for you and supports multi-tenant (B2B) use cases. Free for up to 25,000 authenticated requests, with all s


Question: How to: Mobile App Distribution and Feedback

Answer:
* [Appho.st](https://appho.st) - Mobile app hosting platform. The free plan includes five apps, 50 monthly downloads, and a maximum file size of 100 MB.
  * [Diawi](https://www.diawi.com) - Deploy iOS & Android apps directly to devices. Free plan: app uploads, password-protected links, 1-day expiration, ten installations.
  * [GetUpdraft](https://www.getupdraft.com) - Distribute mobile apps for testing. The free plan includes one app project, three app versions, 500 MB storage, and 100 app installations per month.
  * [InstallOnAir](https://www.installonair.com) - Distribute iOS & Android apps over the air. Free plan: unlimited uploads, private links, 2-day expiration for guests, 60 days for registered users.
  * [Loadly](https://loadly.io) - iOS & Android beta apps distribution service offers completely free services with unlimited downloads, high-speed downloads, and unlimited uploads.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Management System

Answer:
* [bitnami.com](https://bitnami.com/) — Deploy prepared apps on IaaS. Management of 1 AWS micro instance free
  * [Esper](https://esper.io) — MDM and MAM for Android Devices with DevOps. One hundred devices free with one user license and 25 MB Application Storage.
  * [jamf.com](https://www.jamf.com/) —  Device management for iPads, iPhones, and Macs, three devices free
  * [Miradore](https://miradore.com) — Device Management service. Stay up-to-date with your device fleet and secure unlimited devices for free. The free plan offers basic features.
  * [moss.sh](https://moss.sh) - Help developers deploy and manage their web apps and servers. Free up to 25 git deployments per month
  * [ploi.io](https://ploi.io/) - Server management tool to easily manage and deploy your servers & sites. Free for one server.
  * [runcloud.io](https://runcloud.io/) - Server management focusing mainly on PHP projects. Free for up to 1 server.
  * [serveravatar.com](https://serveravatar.com) — Manage and monitor PHP-based web servers with automated configurations. Free for one server.
  * [xcloud.host](https://xcloud.host) — Server management and deployment platform with a user-friendly interface. Free tier available for one server.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Log Management

Answer:
* [bugfender.com](https://bugfender.com/) — Free up to 100k log lines/day with 24 hours retention
  * [log.dog](https://log.dog/) — LogDog is a remote debugging/logging SDK (iOS and Android) with a web ui. Captures all logs, requests and events in real-time and allows to intercept them. Free for up to 100MB of logs every month
  * [logflare.app](https://logflare.app/) — Free for up to 12,960,000 entries per app per month, 3 days retention
  * [logtail.com](https://logtail.com/) — ClickHouse-based SQL-compatible log management. Free up to 1 GB per month, three days retention.
  * [logzab.com](https://logzab.com/) — Audit trail management system. Free 1,000 user activity logs per month, 1-month retention, for up to 5 projects.
  * [ManageEngine Log360 Cloud](https://www.manageengine.com/cloud-siem/) — Log Management service powered by Manage Engine. Free Plan offers 50 GB storage with 15 days Storage Retention and 7 days search.
  * [openobserve.ai](https://openobserve.ai/) - 200 GB Ingestion/month free, 15 Days Retention

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Translation Management

Answer:
* [AutoLocalise.com](https://www.autolocalise.com/) — Instantly localize without managing translation files. Free for up to 10,000 characters/month, unlimited languages.
  * [crowdin.com](https://crowdin.com/) — Unlimited projects, unlimited strings, and collaborators for Open Source
  * [Free PO editor](https://pofile.net/free-po-editor) — Free for everybody
  * [Lingo.dev](https://lingo.dev) – Open-source AI-powered CLI for web & mobile localization. Bring your own LLM, or use 10,000 free words every month via Lingo.dev-managed localization engine.
  * [lingohub.com](https://lingohub.com/) — Free up to 3 users, always free for Open Source
  * [localazy.com](https://localazy.com) - Free for 1000 source language strings, unlimited languages, unlimited contributors, startup and open source deals
  * [Localit](https://localit.io) – Fast, developer-friendly localization platform with seamless and free GitHub/GitLab integration, AI-assisted and manual translations, and a generous free plan (includes 2 users, 500 keys, and unlimited projects).
  * [localizely.com](https://localizely.com/) — Free for Open Source
  * [Loco](https://localise.biz/) — Free up to 2000 translations, Unlimited translators, ten languages/project, 1000 translatable assets/project
  * [POEditor](https://poeditor.com/) — Free up to 1000 strings
  * [SimpleLocalize](https://simplelocalize.io/) - Free up to 100 translation keys, unlimited strings, unlimited languages, startup deals
  * [Texterify](https://texterify.com/) - Free for a single user
  * [Tolgee](https://tolgee.io) - Free SaaS offering with limited translations, forever-free self-hosted version
  * [transifex.com](https://www.transifex.com/) — Free for Open Source

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Monitoring

Answer:
* [assertible.com](https://assertible.com) — Automated API testing and monitoring. Free plans for teams and individuals.
  * [Better Stack](https://betterstack.com/better-uptime) - Uptime monitoring, incident management, on-call scheduling/alerting, and status pages in a single product. The free plan includes ten monitors with 3-minute check frequency and status pages.
  * [bleemeo.com](https://bleemeo.com) - Free for 3 servers, 5 uptime monitors, unlimited users, unlimited dashboards, unlimited alerting rules.
  * [checklyhq.com](https://checklyhq.com) - Open source E2E / Synthetic monitoring and deep API monitoring for developers. Free plan with one user and 10k API & network / 1.5k browser check runs.
  * [Core Web Vitals History](https://punits.dev/core-web-vitals-historical/) - Find Core Web Vitals history for a url or a website.
  * [cronitor.io](https://cronitor.io/) - Performance insights and uptime monitoring for cron jobs, websites, APIs and more. A free tier with five monitors.
  * [datadoghq.com](https://www.datadoghq.com/) — Free for up to 5 nodes
  * [deadmanssnitch.com](https://deadmanssnitch.com/) — Monitoring for cron jobs. One free snitch (monitor), more if you refer others to sign up
  * [downtimemonkey.com](https://downtimemonkey.com/) — 60 uptime monitors, 5-minute interval. Email, Slack alerts.
  * [economize.cloud](https://economize.cloud) — Economize helps demystify cloud infrastructure costs by organizing cloud resources to optimize and report the same. Free for up to $5,000 spent on Google Cloud Platform every month.
  * [fivenines.io](https://fivenines.io/) — Linux server monitoring with real‑time dashboards and alerting — free forever for up to 5 monitored servers at 60-seconds interval. No credit card required.
  * [Grafana Cloud](https://grafana.com/products/cloud/) - Grafana Cloud is a composable observability platform that integrates metrics and logs with Grafana. Free: 3 users, ten dashboards, 100 alerts, metrics storage in Prometheus and Graphite (10,000 series, 14 days retention), logs storage in Loki (50 GB of logs, 14 days retention)
  * [healthchecks.io](https://healthchecks.io) — Monitor your cron jobs and background tasks. Free for up to 20 checks.
  * [incidenthub.cloud](https://incidenthub.cloud/) — Cloud and SaaS status page aggregator - 20 monitors and 2 notification channels (Slack and Discord) are free forever.
  * [inspector.dev](https://www.inspector.dev) - A complete Real-Time monitoring dashboard in less than one minute with a free forever tier.
  * [instatus.com](https://instatus.com) - Get a beautiful status page in 10 seconds. Free forever with unlimited subs and unlimited teams.
  * [linkok.com](https://linkok.com) - Online broken link checker, free for small websites up to 100 pages, completely free for open-source projects.
  * [loader.io](https://loader.io/) — Free load testing tools with limitations
  * [Middleware.io](https://middleware.io/) -  Middleware observability platform provides complete visibility into your apps & stack, so you can monitor & diagnose issues at scale. They have a free forever plan for Dev community use that allows Log monitoring for up to 1M log events, Infrastructure monitoring & APM for up to 2 hosts.
  * [MonitorMonk](https://monitormonk.com) - Minimalist uptime monitoring with beautiful status pages. The Forever Free plan offers HTTPS, Keyword, SSL and Response-time monitorming for 10 websites or api-endpoints, and provides 2 dashboards/status pages.
  * [netdata.cloud](https://www.netdata.cloud/) — Netdata is an open-source tool to collect real-time metrics. It's a growing product and can also be found on GitHub!
  * [newrelic.com](https://www.newrelic.com) — New Relic observability platform built to help engineers create more perfect software. From monoliths to serverless, you can instrument everything and then analyze, troubleshoot, and optimize your entire software stack. The free tier offers 100GB/month of free data ingest, one free full-access user, and unlimited free primary users.
  * [OnlineOrNot.com](https://onlineornot.com/) - OnlineOrNot provides uptime monitoring for websites and APIs, monitoring for cron jobs and scheduled tasks. Also provides status pages. The first five checks with a 3-minute interval are free. The free tier sends alerts via Slack, Discord, and Email.
  * [OntarioNet.ca CN Test](https://cntest.ontarionet.ca) — Check if a website is blocked in China by the Great Firewall. It identifies DNS pollution by comparing DNS results and ASN information detected by servers in China versus servers in the United States.
  * [pagecrawl.io](https://pagecrawl.io/) -  Monitor website changes, free for up to 6 monitors with daily checks.
  * [pagertree.com](https://pagertree.com/) - Simple interface for alerting and on-call management. Free up to 5 users.
  * [phare.io](https://phare.io/) - Uptime Monitoring free for up to 100,000 events for unlimited projets and unlimited status pages.
  * [pingbreak.com]


Question: How to: Education and Career Development

Answer:
* [Cisco Networking Academy, Skills for All](https://skillsforall.com/) - Offers free certification-aligned courses in topics like cybersecurity, networking, and Python.
  * [DeepLearning.AI Short Courses](https://www.deeplearning.ai/short-courses/) - Free short courses from industry-leading experts to get hands-on experience with the latest generative AI tools and techniques in an hour or less.
  * [DevNet Academy](https://devnet-academy.com/) – Free, self-paced training for the Cisco DevNet Expert / CCIE Automation certification. Covers Python Click and Flask-RESTx.
  * [Django-tutorial.dev](https://django-tutorial.dev) - Free online guides for learning Django as their first framework & gives free dofollow backlink to articles written by users.
  * [edX](https://www.edx.org/) - Offers access to over 4,000 free online courses from 250 leading institutions, including Harvard and MIT, specializing in computer science, engineering, and data science.
  * [Exercism](https://exercism.org) – Free, open-source programming education in over 75 programming languages, with human mentoring. A nonprofit organisation.
  * [Free Professional Resume Templates & Editor](https://www.overleaf.com/latex/templates/tagged/cv) - Free platform with lots of Resume templates of Experienced Professionals, ready to clone and edit fully and download, ATS optimized.
  * [FreeCodeCamp](https://www.freecodecamp.org/) - Open-source platform offering free courses and certifications in Data Analysis, Information Security, Web Development, and more.
  * [Full Stack Open](https://fullstackopen.com/en/) – Free university-level course on modern web development with React, Node.js, GraphQL, TypeScript, and more. Fully online and self-paced.
  * [Khan Academy](https://www.khanacademy.org/computing/computer-programming) - Free online guides for learning basic and advanced HTML/CSS, JavaScript and SQL.
  * [LabEx](https://labex.io) - Develop skills in Linux, DevOps, Cybersecurity, Programming, Data Science, and more through interactive labs and real-world projects.
  * [MIT OpenCourseWare](https://ocw.mit.edu/) - MIT OpenCourseWare is an online publication of materials from over 2,500 MIT courses, freely sharing knowledge with learners and educators around the world. Youtube channel can be found at [@mitocw](https://www.youtube.com/@mitocw/featured)
  * [Roadmap.sh](https://roadmap.sh) - Free learning roadmaps covering all aspects of development from Blockchain to UX Design.
  * [The Odin Project](https://www.theodinproject.com/) - Free, open-source platform with a curriculum focused on JavaScript and Ruby for web development.
  * [W3Schools](https://www.w3schools.com/) - Offers free tutorials on web development technologies like HTML, CSS, JavaScript, and more.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Feature Toggles Management Platforms

Answer:
* [Abby](https://www.tryabby.com) - Open-Source feature flags & A/B testing. Configuration as Code & Fully Typed Typescript SDKs. Strong integration with Frameworks such as Next.js & React. Generous free tier and cheap scaling options.
  * [ConfigCat](https://configcat.com) - ConfigCat is a developer-centric feature flag service with unlimited team size, excellent support, and a reasonable price tag. Free plan up to 10 flags, two environments, 1 product, and 5 Million requests per month.
  * [Flagsmith](https://flagsmith.com) - Release features with confidence; manage feature flags across web, mobile, and server-side applications. Use our hosted API, deploy to your own private cloud, or run on-premise.
  * [GrowthBook](https://growthbook.io) - Open source feature flag and A/B testing provider with built-in Bayesian statistical analysis engine. Free for up to 3 users, unlimited feature flags and experiments.
  * [Hypertune](https://www.hypertune.com) - Type-safe feature flags, A/B testing, analytics and app configuration, with Git-style version control and synchronous, in-memory, local flag evaluation. Free for up to 5 team members with unlimited feature flags and A/B tests.
  * [Statsig](https://www.statsig.com) - A robust platform for feature management, A/B testing, analytics, and more. Its generous free plan offers unlimited seats, flags, experiments, and dynamic configurations, supporting up to 1 million events per month.
  * [Toggled.dev](https://www.toggled.dev) - Enterprise-ready, scalable multi-regional feature toggles management platform. Free plan up to 10 flags, two environments, unlimited requests. SDK, analytics dashboard, release calendar, Slack notifications, and all other features are included in the endless free plan.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Generative AI

Answer:
* [Arize AX](https://arize.com) - AI engineering platform that helps AI eng/PMs, evaluate, and observe AI applications and agents with built-in Alyx agent. Free product inlcudes 25k spans and ingestion volume of 1gb per month.
  * [Audio Enhancer](https://voice-clone.org/tools/audio-enhancer) — AI-powered audio enhancer SaaS that removes noise and echo while preserving natural vocal clarity. totally Free: unlimited one-click enhancements, no login required, supports MP3/WAV/FLAC
  * [Braintrust](https://www.braintrustdata.com/) - Evals, prompt playground, and data management for Gen AI. Free plan gives upto 1,000 private eval rows/week.
  * [Clair](https://askclair.ai/) - Clinical AI Reference. Students have free access to the professional tool suite, which includes Open Search, Clinical Summary, Med Review, Drug Interactions, ICD-10 Codes, and Stewardship. Additionally, a free trial for the professional suite is available.
  * [Comet Opik](https://www.comet.com/site/products/opik/) - Evaluate, test, and ship LLM applications across your dev and production lifecycles. [#opensource](https://github.com/comet-ml/opik/)
  * [Keywords AI](https://keywordsai.co) - The best LLM monitoring platform. One format to call 200+ LLMs with 2 lines of code. 10,000 free requests every month and $0 for platform features!
  * [Langfuse](https://langfuse.com/) - Open-source LLM engineering platform that helps teams collaboratively debug, analyze, and iterate on their LLM applications. Free forever plan includes 50k observations per month and all platform features. [#opensource](https://github.com/langfuse/langfuse)
  * [Langtrace](https://langtrace.ai) - enables developers to trace, evaluate, manage prompts and datasets, and debug issues related to an LLM application’s performance. It creates open telemetry standard traces for any LLM which helps with observability and works with any observability client. Free plan offers 50K traces/month.
  * [LangWatch](https://langwatch.ai) - A LLMOps platform helping AI teams measure, monitor, and optimize LLM applications for reliability, cost-efficiency, and performance. With a powerful DSPy component, we enable seamless collaboration between engineers and non-technical teams to fine-tune and productionize GenAI products. Free plan includes all platform features, 1k traces/month and 1 workflow DSPy optimizers. [#opensource](https://github.com/langwatch/langwatch)
  * [Mediaworkbench.ai](https://mediaworkbench.ai) - MediaWorkbench.ai offers 100,000 free words for Azure OpenAI, DeepSeek, and Google Gemini models, enabling users to access powerful tools for code generation, deep research, and image creation.
  * [OpenRouter](https://openrouter.ai/models?q=free) - Provides various free AI models including DeepSeek R1, V3, Llama, and Moonshot AI. These models excel in natural language processing and are suitable for diverse development needs. Note that while these models are free to use, they are subject to rate limits. Additionally, OpenRouter offers paid models for more advanced requirements, for instance Claude, OpenAI, Grok, Gemini, and Nova.
  * [Othor AI](https://othor.ai/) - An AI-native fast, simple, and secure alternative to popular business intelligence solutions like Tableau, Power BI, and Looker. Othor utilizes large language models (LLMs) to deliver custom business intelligence solutions in minutes. The Free Forever plan provides one workspace with five datasource connections for one user, with no limits on analytics. [#opensource](https://github.com/othorai/othor.ai)
  * [Pollinations.AI](https://pollinations.ai/) - easy-to-use, free image generation AI with free API available. No signups or API keys required, and several option for integrating into a website or workflow. [#opensource](https://github.com/pollinations/pollinations)
  * [Portkey](https://portkey.ai/) - Control panel for Gen AI apps featuring an observability suite & an AI gateway. Send & log up to 10,000 requests for free every month.
  * [ReportGPT](https://ReportGPT.app) - AI Powered Writing Assistant. The entire platform is free as long as you bring your own API key.
  * [Zenable](https://zenable.io) - Instantly auto-fix outputs from tools like Cursor, Windsurf, and Copilot to meet your company's quality and compliance standards using guardrails built with Policy as Code. The free tier includes 100 tools calls per day to the MCP server and 25 free automated pull request reviews per day via the GitHub App.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: CDN and Protection

Answer:
* [bootstrapcdn.com](https://www.bootstrapcdn.com/) — CDN for bootstrap, bootswatch and fontawesome.io
  * [CacheFly](https://portal.cachefly.com/signup/free2023) - Up to 5 TB per month of Free CDN traffic, 19 Core PoPs , 1 Domain and Universal SSL.
  * [cdnjs.com](https://cdnjs.com/) — Simple. Fast. Reliable. Content delivery at its finest. cdnjs is a free and open-source CDN service trusted by over 11% of all websites, powered by Cloudflare.
  * [developers.google.com](https://developers.google.com/speed/libraries/) — The Google Hosted Libraries is a content distribution network for the most popular Open Source JavaScript libraries
  * [Gcore](https://gcorelabs.com/) Global content delivery network, 1 TB and 1 million requests per month free and free DNS hosting
  * [jsdelivr.com](https://www.jsdelivr.com/) — A free, fast, and reliable open-source CDN. Supports npm, GitHub, WordPress, Deno, and more.
  * [Microsoft Ajax](https://docs.microsoft.com/en-us/aspnet/ajax/cdn/overview) — The Microsoft Ajax CDN hosts popular third-party JavaScript libraries such as jQuery and enables you to easily add them to your Web application
  * [Namecheap Supersonic](https://www.namecheap.com/supersonic-cdn/#free-plan) — Free DDoS protection
  * [ovh.ie](https://www.ovh.ie/ssl-gateway/) — Free DDoS protection and SSL certificate
  * [PromoProxy](https://promoproxy.net/) - Free cloud Secure Web Gateway. Free plan includes up to 5 users and 1 GB per day.
  * [raw.githack.com](https://raw.githack.com/) — A modern replacement of **rawgit.com** which simply hosts file using Cloudflare
  * [Skypack](https://www.skypack.dev/) — The 100% Native ES Module JavaScript CDN. Free for 1 million requests per domain per month.
  * [statically.io](https://statically.io/) — CDN for Git repos (GitHub, GitLab, Bitbucket), WordPress-related assets, and images
  * [Stellate](https://stellate.co/) - Stellate is a blazing-fast, reliable CDN for your GraphQL API and free for two services.
  * [toranproxy.com](https://toranproxy.com/) — Proxy for Packagist and GitHub. Never fail CD. Free for personal use, one developer, no support
  * [UNPKG](https://unpkg.com/) — CDN for everything on npm
  * [weserv](https://images.weserv.nl/) — An image cache & resize service. Manipulate images on the fly with a worldwide cache.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Low-code Platform

Answer:
* [appsmith](https://www.appsmith.com/) — Low code project to build admin panels, internal tools, and dashboards. Integrates with 15+ databases and any API.
  * [BudiBase](https://budibase.com/) — Budibase is an open-source low-code platform for creating internal apps in minutes. Supports PostgreSQL, MySQL, MSSQL, MongoDB, Rest API, Docker, K8s
  * [Clappia](https://www.clappia.com) — A low-code platform designed for building business process applications with customizable mobile and web apps. Offers a drag-and-drop interface, features like Offline Support, real-time location tracking and integration with various third-party services
  * [lil'bots](https://www.lilbots.io/) - write and run scripts online utilizing free built-in APIs like OpenAI, Anthropic, Firecrawl and others. Great for building AI agents / internal tooling and sharing with team. Free-tier includes full access to APIs, AI coding assistant and 10,000 execution credits / month.
  * [manubes](https://www.manubes.com) - Powerful no-code cloud platform with a focus on industrial production management. Free for one user with 1 million workflow activities a month ([also available in german](https://www.manubes.de)).
  * [Mendix](https://www.mendix.com/) — Rapid Application Development for Enterprises, unlimited accessible sandbox environments supporting total users, 0.5 GB storage and 1 GB RAM per app. Also, Studio and Studio Pro IDEs are allowed in the free tier.
  * [outsystems.com](https://www.outsystems.com/) — Enterprise web development PaaS for on-premise or cloud, free "personal environment" offering allows for unlimited code and up to 1 GB database
  * [ReTool](https://retool.com/) — Low-code platform for building internal applications. Retool is highly hackable. If you can write it with JavaScript and an API, you can make it in Retool. The free tier allows up to five users per month, unlimited apps and API connections.
  * [ToolJet](https://www.tooljet.com/) — Extensible low-code framework for building business applications. Connect to databases, cloud storages, GraphQL, API endpoints, Airtable, etc., and build apps using drag-and-drop application builder.
  * [UI Bakery](https://uibakery.io) — Low-code platform that enables faster building of custom web applications. Supports building UI using drag and drop with a high level of customization through JavaScript, Python, and SQL. Available as both cloud and self-hosted solutions. Free for up to 5 users.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Web Hosting

Answer:
* [Alwaysdata](https://www.alwaysdata.com/) — 1 GB free web hosting with support for MySQL, PostgreSQL, RabbitMQ, .NET, Deno, Elixir, Go, Java, Lua, Node.js, PHP, Python, Ruby, Rust. Custom web servers, access via FTP, WebDAV and SSH. Mailbox, mailing list and app installer included. No custom domain on free plan.
  * [Awardspace.com](https://www.awardspace.com) — Free web hosting + a free short domain, PHP, MySQL, App Installer, Email Sending & No Ads.
  * [Bubble](https://bubble.io/) — Visual programming to build web and mobile apps without code, free with Bubble branding.
  * [dAppling Network](https://www.dappling.network/) - Decentralized web hosting platform for Web3 frontends focusing on increasing uptime and security and providing an additional access point for users.
  * [DigitalOcean](https://www.digitalocean.com/pricing) - Build and deploy three static sites for free on the App Platform Starter tier.
  * [FreeFlarum](https://freeflarum.com/) - Community-powered free Flarum hosting for up to 250 users (donate to remove the watermark from the footer).
  * [Kinsta Static Site Hosting](https://kinsta.com/static-site-hosting/) — Deploy up to 100 static sites for free, custom domains with SSL, 100 GB monthly bandwidth, 260+ Cloudflare CDN locations.
  * [MDB GO](https://mdbgo.com/) - Free hosting for one project with two weeks Container TTL, 500 MB RAM per project, SFTP - 1G disk space.
  * [Neocities](https://neocities.org) — Static, 1 GB free storage with 200 GB Bandwidth.
  * [Netlify](https://www.netlify.com/) — Builds, deploys and hosts static site/app free for 300 credits/month (equals 30 GB bandwidth).
  * [Oaysus](https://oaysus.com) - Visual page builder for developer-built React, Vue, or Svelte components. Free tier includes 1 site with unlimited pages, form submissions, and global CDN hosting.
  * [PandaStack](https://www.pandastack.io/) — An eco-system for developers includes web hosting in different formats (static web hosting, container based web hosting, wordpress and so many other managed apps available in couple of clicks ). One free web hosting (static or containered) and one free database with 100GB Bandwidth and 300 Build mins/month.
  * [pantheon.io](https://pantheon.io/) — Drupal and WordPress hosting, automated DevOps, and scalable infrastructure. Free for developers and agencies. No custom domain.
  * [Qoddi](https://qoddi.com) - PaaS service similar to Heroku with a developer-centric approach and all-inclusive features. Free tier for static assets, staging, and developer apps.
  * [readthedocs.org](https://readthedocs.org/) — Free documentation hosting with versioning, PDF generation, and more
  * [render.com](https://render.com) — Unified cloud to build and run apps and sites with free SSL, a global CDN, private networks, auto-deploys from Git, and completely free plans for web services, databases, and static web pages.
  * [Serv00.com](https://serv00.com/) — 3 GB of free web hosting with daily backups (7 days). Support: Crontab jobs, SSH access, repositories (GIT, SVN, and Mercurial), support: MySQL, PostgreSQL, MongoDB, PHP, Node.js, Python, Ruby, Java, Perl, TCL/TK, Lua, Erlang, Rust, Pascal, C, C++, D, R, and many more.
  * [SourceForge](https://sourceforge.net/) — Find, Create, and Publish Open Source software for free
  * [surge.sh](https://surge.sh/) — Static web publishing for Front-End developers. Unlimited sites with custom domain support
  * [tilda.cc](https://tilda.cc/) — One site, 50 pages, 50 MB storage, only the main pre-defined blocks among 170+ available, no fonts, no favicon, and no custom domain
  * [Vercel](https://vercel.com/) — Build, deploy, and host web apps with free SSL, global CDN, and unique Preview URLs each time you `git push`. Perfect for Next.js and other Static Site Generators.
  * [Versoly](https://versoly.com/) — SaaS-focused website builder - unlimited websites, 70+ blocks, five templates, custom CSS, favicon, SEO and forms. No custom domain.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Managed Data Services

Answer:
* [8base.com](https://www.8base.com/) - 8base is a full-stack low-code development platform built for JavaScript developers built on top of MySQL and GraphQL and serverless backend-as-a-service. It allows you to start building web applications quickly using a UI app builder and scale quickly, The Free tier includes rows: 2,500, Storage: 500, Serverless computing: 1Gb/h, and client app users: 5.
  * [airtable.com](https://airtable.com/) — Looks like a spreadsheet, but it's a relational database unlimited bases, 1,200 rows/base, and 1,000 API requests/month
  * [Aiven](https://aiven.io/) - Aiven offers free PostgreSQL, MySQL and Valkey (Redis compatible) plans on its open-source data platform. Single node, 1 CPU, 1GB RAM, and for PostgreSQL and MySQL, 1GB storage. Easy migration to more extensive plans or across clouds.
  * [CockroachDB Cloud](https://www.cockroachlabs.com/pricing/) — Free tier offers 50 million RUs and 10 GiB of storage (same as 15$ worth) free per month. ([What's the Request Units](https://www.cockroachlabs.com/docs/cockroachcloud/metrics-request-units.html))
  * [codehooks.io](https://codehooks.io/) — Easy to use JavaScript serverless API/backend and NoSQL database service with functions, Mongdb-ish queries, key/value lookups, a job system, realtime messages, worker queues, a powerful CLI and a web-based data manager. Free plan has 5GB storage and 60/API calls per minute. 2 developers included. No credit-card required.
  * [Couchbase Capella](https://www.couchbase.com/products/capella/) - deploy a forever free tier fully managed database cluster with 1 node and 8GB storage, built for developers to create the next generation of applications across IoT to AI
  * [CrateDB](https://crate.io/) - Distributed Open Source SQL database for real-time analytics. [Free Tier CRFREE](https://crate.io/lp-crfree): One-node with 2 CPUs, 2 GiB of memory, 8 GiB of storage. One cluster per organization, no payment method needed.
  * [filess.io](https://filess.io) - filess.io is a platform where you can create two databases with up to 10 MB per database of the following DBMS for free: MySQL, MariaDB, MongoDB, and PostgreSQL.
  * [InfluxDB](https://www.influxdata.com/) — Timeseries database, free up to 3MB/5 minutes writes, 30MB/5 minutes reads and 10,000 cardinalities series
  * [MemCachier](https://www.memcachier.com/) — Managed Memcache service. Free for up to 25MB, 1 Proxy Server, and basic analytics
  * [MongoDB Atlas](https://www.mongodb.com/cloud/atlas) — free tier gives 512 MB
  * [Neo4j Aura](https://neo4j.com/cloud/aura/) — Managed native Graph DBMS / analytics platform with a Cypher query language and a REST API. Limits on graph size (50k nodes, 175k relationships).
  * [Neon](https://neon.tech/) — Managed PostgreSQL, 0.5 GB of storage (total), 1 Project ,10 branches, Unlimited Databases, always-available primary branch ( Auto suspend after 5 minutes), 20 hours of Active time per month (total) for non-primary branch compute.
  * [Nile](https://www.thenile.dev/) — A Postgres platform for B2B apps. Unlimited databases, Always available with no shutdown, 1GB of storage (total), 50 million query tokens, autoscaling, unlimited vector embeddings
  * [Prisma Postgres](https://prisma.io/postgres) - Super fast hosted Postgres built on unikernels and running on bare metal, 1GB storage, 10 databases, integrated with Prisma ORM.
  * [restdb.io](https://restdb.io/) - a fast and straightforward NoSQL cloud database service. With restdb.io you get schema, relations, automatic REST API (with MongoDB-like queries), and an efficient multi-user admin UI for working with data. The free plan allows 3 users, 2500 records, and 1 API request per second.
  * [scalingo.com](https://scalingo.com/) — Primarily a PaaS but offers a 128MB to 192MB free tier of MySQL, PostgreSQL, or MongoDB
  * [SeaTable](https://seatable.io/) — Flexible, Spreadsheet-like Database built by the Seafile team. unlimited tables, 2,000 lines, 1-month versioning, up to 25 team members.
  * [skyvia.com](https://skyvia.com/) — Cloud Data Platform offers a free tier and all plans are completely free while in beta
  * [StackBy](https://stackby.com/) — One tool that combines spreadsheets' flexibility, databases' power, and built-in integrations with your favorite business apps. The free plan includes unlimited users, ten stacks, and a 2GB attachment per stack.
  * [Tinybird](https://tinybird.co) - A serverless managed ClickHouse with connection-less data ingest over HTTP and lets you publish SQL queries as managed HTTP APIs. There is no time limit on free-tier, 10GB storage + 1000 API requests per day.
  * [Turso by ChiselStrike](https://chiselstrike.com/) - Turso is SQLite Developer Experience in an Edge Database. Turso provides a Free Forever starter plan, 9 GB of total storage, Up to 500 databases, Up to 3 locations, 1 billion row reads per month, and Local development support with SQLite.
  * [Upstash](https://upstash.com/) — Serverless Redis with free ti


Question: How to: Tunneling, WebRTC, Web Socket Servers and Other Routers

Answer:
* [btunnel](https://www.btunnel.in/) — Expose localhost and local tcp server to the internet. Free plan includes file server, custom http request and response headers, basic auth protection and 1 hour tunnel timeout.
  * [cname.dev](https://cname.dev/) — Free and secure dynamic reverse proxy service.
  * [conveyor.cloud](https://conveyor.cloud/) — Visual Studio extension to expose IIS Express to the local network or over a tunnel to a public URL.
  * [Expose](https://expose.dev/) - Expose local sites via secure tunnels. The free plan includes an EU Server, Random subdomains, and Single users.
  * [Hamachi](https://www.vpn.net/) — LogMeIn Hamachi is a hosted VPN service that lets you securely extend LAN-like networks to distributed teams with a free plan that allows unlimited networks with up to 5 people
  * [Hookdeck](https://hookdeck.com/pricing) — Develop, test, and monitor your webhooks from anywhere. 100K requests and 100K attempts per month with three days retention.
  * [localhost.run](https://localhost.run/) — Expose locally running servers over a tunnel to a public URL.
  * [localtunnel](https://theboroer.github.io/localtunnel-www/) — Expose locally running servers over a tunnel to a public URL. Free hosted version, and [open source](https://github.com/localtunnel/localtunnel).
  * [LocalXpose](https://localxpose.io) — Reverse proxy that enables you to expose your localhost servers to the internet. The free plan has 15 minutes tunnel lifetime.
  * [ngrok.com](https://ngrok.com/) — Expose locally running servers over a tunnel to a public URL.
  * [Pinggy](https://pinggy.io) — Public URLs for localhost with a single command, no downloads required. HTTPS / TCP / TLS tunnels. The free plan has 60 minutes tunnel lifetime.
  * [Radmin VPN](https://www.radmin-vpn.com/) — Connect multiple computers together via a VPN-enabling LAN-like network. Unlimited peers. (Hamachi alternative)
  * [serveo](https://serveo.net/) — Expose local servers to the internet. No installation, no signup. Free subdomain, no limits.
  * [stun:global.stun.twilio.com:3478?transport=udp](stun:global.stun.twilio.com:3478?transport=udp) Twilio STUN
  * [stun:stun.l.google.com:19302](stun:stun.l.google.com:19302) - Google STUN
  * [Tailscale](https://tailscale.com/) — Zero config VPN, using the open-source WireGuard protocol. Installs on MacOS, iOS, Windows, Linux, and Android devices. Free plan for personal use with 100 devices and three users.
  * [webhookrelay.com](https://webhookrelay.com) — Manage, debug, fan-out, and proxy all your webhooks to public or internal (i.e. localhost) destinations. Also, expose servers running in a private network over a tunnel by getting a public HTTP endpoint (`https://yoursubdomain.webrelay.io <----> http://localhost:8080`).
  * [Xirsys](https://www.xirsys.com/pricing/) — Unlimited STUN usage + 500 MB monthly TURN bandwidth, capped bandwidth, single geographic region.
  * [ZeroTier](https://www.zerotier.com) — FOSS managed virtual Ethernet as a service. Unlimited end-to-end encrypted networks of 25 clients on the free plan. Clients for desktop/mobile/NA; web interface for configuration of custom routing rules and approval of new client nodes on private networks

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Issue Tracking and Project Management

Answer:
* [acunote.com](https://www.acunote.com/) — Free project management and SCRUM software for up to 5 team members
  * [asana.com](https://asana.com/) — Free for private project with collaborators
  * [Backlog](https://backlog.com) — Everything your team needs to release great projects in one platform. The free plan offers 1 Project with ten users & 100MB of storage.
  * [Basecamp](https://basecamp.com/personal) - To-do lists, milestone management, forum-like messaging, file sharing, and time tracking. Up to 3 projects, 20 users, and 1GB of storage space.
  * [bitrix24.com](https://www.bitrix24.com/) — Intranet and project management tool. The free plan has 5GB for unlimited users.
  * [cacoo.com](https://cacoo.com/) — Online real-time diagrams: flowchart, UML, network. Free max. 15 users/diagram, 25 sheets
  * [clickup.com](https://clickup.com/) — Project management. Free, premium version with cloud storage. Mobile applications and Git integrations are available.
  * [Clockify](https://clockify.me) - Time tracker and timesheet app that lets you track work hours across projects. Unlimited users, free forever.
  * [Cloudcraft](https://cloudcraft.co/) — Design a professional architecture diagram in minutes with the Cloudcraft visual designer, optimized for AWS with intelligent components that show live data too. Free plan has unlimited private diagrams for single user.
  * [Confluence](https://www.atlassian.com/software/confluence) - Atlassian's content collaboration tool is used to help teams collaborate and share knowledge efficiently. Free plan for up to 10 users.
  * [Crosswork](https://crosswork.app/) - Versatile project management platform. Free for up to 3 projects, unlimited users, 1 GB storage.
  * [diagrams.net](https://app.diagrams.net/) — Online diagrams stored locally in Google Drive, OneDrive, or Dropbox. Free for all features and storage levels
  * [easyretro.io](https://www.easyretro.io/) — Simple and intuitive sprint retrospective tool. The free plan has three public boards and one survey per board per month.
  * [freedcamp.com](https://freedcamp.com/) - tasks, discussions, milestones, time tracking, calendar, files and password manager. Free plan with unlimited projects, users, and file storage.
  * [GForge](https://gforge.com) — Project Management and issue Tracking toolset for complex projects with self-premises and SaaS options. SaaS free plan offers the first five users free & free for Open Source Projects.
  * [gleek.io](https://www.gleek.io) — Free description-to-diagrams tool for developers. Create informal UML class, object, or entity-relationship diagrams using your keyword.
  * [GraphQL Inspector](https://github.com/marketplace/graphql-inspector) - GraphQL Inspector outputs a list of changes between two GraphQL schemas. Every difference is precisely explained and marked as breaking, non-breaking, or dangerous.
  * [Helploom](https://helploom.com) - Customer support software that offers a live chat on the free forever plan. Simple, lightweight and beautiful. Setup is a simple copy-paste script. Built by a developer.
  * [Hygger](https://hygger.io) — Project management platform. The free plan offers unlimited users, projects & boards with 100 MB of Storage.
  * [Ilograph](https://www.ilograph.com/)  — interactive diagrams that allow users to see their infrastructure from multiple perspectives and levels of detail. Charts can be expressed in code. The free tier has unlimited private diagrams with up to 3 viewers.
  * [Jira](https://www.atlassian.com/software/jira) — Advanced software development project management tool used in many corporate environments. Free plan for up to 10 users.
  * [kan.bn](https://kan.bn/) - A powerful, flexible kanban app that helps you organise work, track progress, and deliver results—all in one place. Free plan up to 1 user for unlimited boards, unlimited lists, unlimited cards.
  * [kanbanflow.com](https://kanbanflow.com/) — Board-based project management. Free, premium version with more options
  * [kanbantool.com](https://kanbantool.com/) — Kanban board-based project management. The free plan has two boards and two users, without attachments or files.
  * [Kitemaker.co](https://kitemaker.co) - Collaborate through all phases of the product development process and keep track of work across Slack, Discord, Figma, and Github. Unlimited users, unlimited spaces. Free plan up to 250 work items.
  * [Kiter.app](https://www.kiter.app/) - Let anyone organize their job search and track interviews, opportunities, and connections. Powerful web app and Chrome extension. Completely free.
  * [Kumu.io](https://kumu.io/)  — Relationship maps with animation, decorations, filters, clustering, spreadsheet imports, etc. The free tier allows unlimited public projects. Graph size unlimited. Free private projects for students. Sandbox mode is available if you prefer not to leave your file publicly online (upload, edit, download, discard).
  * [leiga.com](https://www.leiga.com/) —


Question: How to: Storage and Media Processing

Answer:
* [AndroidFileHost](https://androidfilehost.com/) - Free file-sharing platform with unlimited speed, bandwidth, file count, download count, etc. It is mainly aimed for Android dev-related files like APK build, custom ROM & modifications, etc. But seems to accept any other files as well.
  * [borgbase.com](https://www.borgbase.com/) — Simple and secure offsite backup hosting for Borg Backup. 10 GB free backup space and two repositories.
  * [cloudinary.com](https://cloudinary.com/) — Image upload, powerful manipulations, storage, and delivery for sites and apps, with Ruby, Python, Java, PHP, Objective-C, and more libraries. The free tier includes 25 monthly credits. One credit equals 1,000 image transformations, 1 GB of storage, or 1 GB of CDN usage.
  * [degoo.com](https://degoo.com/) – AI based cloud storage with free up to 20 GB, three devices, 5 GB referral bonus (90 days account inactivity).
  * [Dropshare](https://dropsha.re) - Zero-knowledge file sharing. End-to-end encrypted file sharing with AES-256-GCM encryption, client-side processing, and zero server-side data access. Free uploads for files up to 1GB with no data collection.
  * [embed.ly](https://embed.ly/) — Provides APIs for embedding media in a webpage, responsive image scaling, and extracting elements from a webpage. Free for up to 5,000 URLs/month at 15 requests/second
  * [Ente](https://ente.io/) - Ente is an end-to-end encrypted cloud for photos, videos and 2FA secrets. Can also be self-hosted along with a generous forever free-tier of 10GB. For free tier users, only single replica of data is kept.
  * [file.io](https://www.file.io) - 2 GB storage of files. A file is auto-deleted after one download. REST API to interact with the storage. Rate limit one request/minute.
  * [freetools.site](https://freetools.site/) — Free online tools. Convert or edit documents, images, audio, video, and more.
  * [getpantry.cloud](https://getpantry.cloud/) — A simple JSON data storage API perfect for personal projects, hackathons, and mobile apps!
  * [GoFile.io](https://gofile.io/) - Free file sharing and storage platform can be used via web-based UI & also API. unlimited file size, bandwidth, download count, etc. But it will be deleted when a file becomes inactive (no download for more than ten days).
  * [gumlet.com](https://www.gumlet.com/) — Image and video hosting, processing and streaming via CDN. Provides generous free tier of 250 GB / month for videos and 30 GB  / month for images.
  * [icedrive.net](https://www.icedrive.net/) - Simple cloud storage service. 10 GB free storage
  * [image-charts.com](https://www.image-charts.com/) — Unlimited image chart generation with a watermark
  * [ImageEngine](https://imageengine.io/) – ImageEngine is an easy to use global image CDN. Sub 60 sec setup. AVIF and JPEGXL support, WordPress-, Magento-, React-, Vue- plugins and more. Claim your free developer account [here](https://imageengine.io/developer-program/).
  * [imagekit.io](https://imagekit.io) – Image CDN with automatic optimization, real-time transformation, and storage that you can integrate with existing setup in minutes. The free plan includes up to 20GB of bandwidth per month.
  * [ImgBB](https://imgbb.com/) — ImgBB is an unlimited image hosting servce. Drag and drop your image anywhere on the screen. 32 MB / image limit. Receive Direct image links, BBCode and HTML thumbnails after uploading image. Login to see the upload history.
  * [Imgbot](https://github.com/marketplace/imgbot) — Imgbot is a friendly robot that optimizes your images and saves you time. Optimized images mean smaller file sizes without sacrificing quality. It's free for open source.
  * [imgen](https://www.jitbit.com/imgen/) - Free unlimited social cover image generation API, no watermark
  * [imgix](https://www.imgix.com/) - Image Caching, management and CDN. Free plan includes 1000 origin images, infinite transformations and 100 GB bandwidth
  * [internxt.com](https://internxt.com) – Internxt Drive is a zero-knowledge file storage service based on absolute privacy and uncompromising security. Sign up and get 10 GB for free, forever!
  * [kraken.io](https://kraken.io/) — Image optimization for website performance as a service, free plan up to 1 MB file size
  * [LibreQR](https://libreqr.com) — Free QR code generator focused on privacy and no tracking. Free to use with no data collection.
  * [nitropack.io](https://nitropack.io/) - Accelerate your site's speed on autopilot with complete front-end optimization (caching, images and code optimization, CDN). Free for up to 5,000 pageviews/month
  * [npoint.io](https://www.npoint.io/) — JSON store with collaborative schema editing
  * [otixo.com](https://www.otixo.com/) — Encrypt, share, copy, and move all your cloud storage files from one place. The basic plan provides unlimited file transfer with 250 MB max. file size and allows five encrypted files
  * [packagecloud.io](https://packagecloud.io/) — Hosted Package Repositories for Y


Question: How to: Design and UI

Answer:
* [AllTheFreeStock](https://allthefreestock.com) - a curated list of free stock images, audio and videos.
  * [Ant Design Landing Page](https://landing.ant.design/) - Ant Design Landing Page provides a template built by Ant Motion's motion components. It has a rich homepage template, downloads the template code package, and can be used quickly. You can also use the editor to quickly build your own dedicated page.
  * [Backlight](https://backlight.dev/) — With collaboration between developers and designers at heart, Backlight is a complete coding platform where teams build, document, publish, scale, and maintain Design Systems. The free plan allows up to 3 editors to work on one design system with unlimited viewers.
  * [BoxySVG](https://boxy-svg.com/app) — A free installable Web app for drawing SVGs and exporting in SVG, PNG, jpeg, and other formats.
  * [Branition](https://branition.com/colors) - Hand-curated color pallets best fitted for brands.
  * [Calendar Icons Generator](https://calendariconsgenerator.app/) -- Generate an entire year's worth of unique icons in a single click, absolutely FREE
  * [Canva](https://canva.com) - Free online design tool to create visual content.
  * [Carousel Hero](https://carouselhero.com/) - Free online tool to create social media carousels.
  * [Circum Icons](https://circumicons.com) - Consistent open-source icons such as SVG for React, Vue, and Svelte.
  * [clevebrush.com](https://www.cleverbrush.com/) — Free Graphics Design / Photo Collage App. Also, they offer paid integration of it as a component.
  * [cloudconvert.com](https://cloudconvert.com/) — Convert anything to anything. Two hundred eight supported formats including videos and gifs.
  * [CMYK Pantone](https://www.cmyktopantone.com/) - Easily convert CMYK values to the closest Pantone colors and other color models in seconds for free.
  * [CodedThemes](https://codedthemes.com/) - Offers a well-crafted admin dashboard & and UI kits designed to simplify and speed up modern web development.
  * [CodeMyUI](https://codemyui.com) - Handpicked collection of Web Design & UI Inspiration with Code Snippets.
  * [ColorKit](https://colorkit.co/) - Create color palettes online or get inspiration from top palettes.
  * [colorr.me](https://colorr.me/) - Color & Gradient Generator
  * [coolors](https://coolors.co/) - Color palette generator. Free.
  * [css-gradient.com](https://www.css-gradient.com/) - Free tool to quickly generate custom cross-browser CSS gradients. In RGB and HEX format.
  * [css.glass](https://css.glass/) -- Free web app for creating glassmorphic designs using CSS.
  * [DaisyUI](https://daisyui.com/) -- Free. "Use Tailwind CSS but write fewer class names" offers components like buttons.
  * [easyvectors.com](https://easyvectors.com/) — EasyVectors.com is a free SVG vector art stock. Download the best vector graphics absolutely for free.
  * [Excalidraw](https://excalidraw.com/) -- A free online drawing document web page with free save to local and export support.
  * [figma.com](https://www.figma.com) — Online, collaborative design tool for teams; free tier includes unlimited files and viewers with a max of 2 editors and three projects.
  * [Float UI](https://floatui.com/) - free web development tool for quickly creating modern, responsive websites with sleek design, even for non-designers.
  * [Flows](https://flows.sh/) -- A fully customizable product adoption platform for building onboarding and user engagement experiences. Free for up to 250 monthly tracked users.
  * [Flyon UI](https://flyonui.com/)- The Easiest Components Library For Tailwind CSS.
  * [framer.com](https://www.framer.com/) - Framer helps you iterate and animate interface ideas for your next app, website, or product—starting with powerful layouts. For anyone validating Framer as a professional prototyping tool: unlimited viewers, up to 2 editors, and up to 3 projects.
  * [freeforcommercialuse.net](https://freeforcommercialuse.net/) — FFCU Worry-free model/property release stock photos
  * [Glyphs](https://glyphs.fyi/) -- Free, The Mightiest Icons on the Web, Fully editable & truly open source design system.
  * [Gradientos](https://www.gradientos.app) - Makes choosing a gradient fast and easy.
  * [Grapedrop](https://grapedrop.com/) — Responsive, powerful, SEO-optimized web page builder based on GrapesJS Framework. Free for the first five pages, unlimited custom domains, all features, and simple usage.
  * [haikei.app](https://www.haikei.app/) - Haikei is a web app to generate unique SVG shapes, backgrounds, and patterns – ready to use with your design tools and workflow.
  * [hypercolor.dev](https://hypercolor.dev/) -- A curated collection of Tailwind CSS color gradients also provides a variety of generators to create your own.
  * [HyperUI](https://www.hyperui.dev/) -- Free Open Source Tailwind CSS Components.
  * [Icon Horse](https://icon.horse) – Get the highest resolution favicon for any website from our simple API.
  * [iconify.d


Question: How to: Design Inspiration

Answer:
* [awwwards.](https://www.awwwards.com/) - [Top websites] A showcase of all the best-designed websites (voted on by designers).
  * [Behance](https://www.behance.net/) - [Design showcase] A place where designers showcase their work. Filterable with categories for UI/UX projects.
  * [dribbble](https://dribbble.com/) - [Design showcase] Unique design inspiration, generally not from real applications.
  * [Landings](https://landings.dev/) - [Web screenshots] Find the best landing pages for your design inspiration based on your preference.
  * [Lapa Ninja](https://www.lapa.ninja/) - [Landing page / UI KIts / Web screenshots] Lapa Ninja is a gallery featuring the best 6025 landing page examples, free books for designers and free UI kits from around the web.
  * [LovelyLanding.net](https://www.lovelylanding.net/) - [Landing Page Designs] Frequently updated landing page screenshots. Includes Desktop, Tablet, and Mobile screenshots.
  * [Mobbin](https://mobbin.design/) - [Mobile screenshots] Save hours of UI & UX research with our library of 50,000+ fully searchable mobile app screenshots.
  * [Mobile Patterns](https://www.mobile-patterns.com/) - [Mobile screenshots] A design inspirational library featuring the finest UI UX Patterns (iOS and Android) for designers, developers, and product makers to reference.
  * [Page Flows](https://pageflows.com/) - [Mobile / web videos and screenshots] Videos of full flows across many mobile and web apps. Also includes screenshots. Highly searchable and indexed.
  * [Refero](https://refero.design/) - [Web screenshots] Tagged and searchable collection of design references from great web applications.
  * [Screenlane](https://screenlane.com/) - [Mobile screenshots] Get inspired and keep up with the latest web & mobile app UI design trends. Filterable by pattern and app.
  * [scrnshts](https://scrnshts.club/) - [Mobile screenshots] A hand-picked collection of the finest app store design screenshots.
  * [Uiland Design](https://uiland.design/) - [Mobile screenshots] Explore Mobile and Web UI Designs from Leading Companies in Africa and the world.

**[⬆ Back to Top](#table-of-contents)**


Question: How to: Data Visualization on Maps

Answer:
* [Clockwork Micro](https://clockworkmicro.com/) — Map tools that work like clockwork. Fifty thousand free monthly queries (map tiles, db2vector, elevation).
  * [Foursquare](https://developer.foursquare.com/) - Location discovery, venue search, and context-aware content from Places API and Pilgrim SDK.
  * [geoapify.com](https://www.geoapify.com/) - Vector and raster map tiles, geocoding, places, routing, isolines APIs. Three thousand free requests/day.
  * [geocod.io](https://www.geocod.io/) — Geocoding via API or CSV Upload. Two thousand five hundred free queries/day.
  * [geocodify.com](https://geocodify.com/) — Geocoding and Geoparsing via API or CSV Upload. 10k free queries/month.
  * [geojs.io](https://www.geojs.io/) - Highly available REST/JSON/JSONP IP Geolocation lookup API.
  * [Geokeo api](https://geokeo.com) - Geocoding API with language correction and more. Worldwide coverage. 2,500 free daily queries
  * [graphhopper.com](https://www.graphhopper.com/) A free developer package is offered for Routing, Route Optimization, Distance Matrix, Geocoding, and Map Matching.
  * [here](https://developer.here.com/) — APIs and SDKs for maps and location-aware apps. 250k transactions/month for free.
  * [IP Geolocation](https://ipgeolocation.io/) — Free DEVELOPER plan available with 30K requests/month.
  * [ipstack](https://ipstack.com/) - Locate and identify Website Visitors by IP Address
  * [locationiq.com](https://locationiq.com/) — Geocoding, Maps, and Routing APIs. Five thousand requests/day for free.
  * [mapbox.com](https://www.mapbox.com/) — Maps, geospatial services and SDKs for displaying map data.
  * [maps.stamen.com](http://maps.stamen.com/) - Free map tiles and tile hosting.
  * [maptiler.com](https://www.maptiler.com/cloud/) — Vector maps, map services and SDKs for map visualization. Free vector tiles with weekly updates and four map styles.
  * [nominatim.org](https://nominatim.org/) — OpenStreetMap's free geocoding service, providing global address search functionality and reverse geocoding capabilities.
  * [opencagedata.com](https://opencagedata.com) — Geocoding API aggregating OpenStreetMap and other open geo sources. Two thousand five hundred free queries/day.
  * [osmnames](https://osmnames.org/) — Geocoding, search results ranked by the popularity of related Wikipedia page.
  * [positionstack](https://positionstack.com/) - Free geocoding for global places and coordinates. 25,000 Requests per month for personal use.
  * [stadiamaps.com](https://stadiamaps.com/) — Map tiles, routing, navigation, and other geospatial APIs. Two thousand five hundred free map views and API requests/day for non-commercial usage and testing.

**[⬆ Back to Top](#table-of-contents)**