How to: APIs, Data, and ML
* [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.
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