How to: Communications
[Back to the Top](#table-of-contents)

[Matrix](https://matrix.org/) is a tool that gives you simple HTTP APIs and SDKs (iOS, Android, Web) to create chatrooms, direct chats and chat bots, complete with end-to-end encryption, file transfer, synchronised conversation history, formatted messages, read receipts and more.

[Postmoogle](https://gitlab.com/etke.cc/postmoogle) is an actual SMTP server that allows you to send and receive emails on your matrix server. It can't be used with arbitrary email providers, because it acts as an actual email provider itself, so you can use it to send emails from your apps and scripts as well.

[SimpleX](https://simplex.chat/) is a privacy redefined messenger without user IDs. Other apps have user IDs: **Signal, Matrix, Session, Briar, Jami, Cwtch, etc.** SimpleX does not, not even random numbers.

[Element](https://element.io/) is a Matrix web client built using the [Matrix React SDK](https://github.com/matrix-org/matrix-react-sdk).

[Mattermost](https://mattermost.com/) is a secure, open source platform for communication, collaboration, and workflow orchestration across tools and teams.

[Mastadon](https://joinmastodon.org/) is a a decentralized social media platform that supports audio, video and picture posts, accessibility descriptions, polls, content warnings, animated avatars, custom emojis, thumbnail crop control, and more, to help you express yourself online.

[Telegram](https://telegram.org/) is a cross-platform, cloud-based instant messaging service. It has an open API and source code free for everyone. Telegram also provides end-to-end encrypted video calling, VoIP, file sharing and several other features.

[Berty](https://github.com/berty/berty) is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network.

[Pleroma](https://pleroma.social/) is a free and open communication for everyone. Pleroma is social networking software compatible with other Fediverse software such as Misskey, Pixelfed, Mastodon and many others. 

[ffsend](https://gitlab.com/timvisee/ffsend) is a easily and securely share files from the command line. A fully featured Firefox Send client. 

[Nostr(Notes and Other Stuff Transmitted by Relays)](https://github.com/nostr-protocol/nostr) is a truly censorship-resistant alternative to Twitter that has a chance of working.

[Diaspora](https://diasporafoundation.org/) is a privacy-aware, distributed, open source social network.

[Hubzilla](https://framagit.org/hubzilla/core) is a general purpose communication server integrated with a web publishing system and a decentralised permission system.

[Expanse](https://github.com/jc9108/expanse) is a fully selfhosted multi-user web app for externally storing Reddit items (saved, created, upvoted, downvoted, hidden) to bypass Reddit's 1000-item listing limits.

[giscus](https://giscus.app/) is a comments system powered by GitHub Discussions. Let visitors leave comments and reactions on your website via GitHub.

[Mailroute](https://mailroute.net/) is a great tool that provides the best email filtering & security( CMMC, NIST 800-171, DFARS, DISA, HIPPA). It protects your inbox, stop spam, viruses, ransomware, security threats & more with email filtering services. With an easy setup on Office 365, Google & more.

[Docker Mailserver](https://github.com/docker-mailserver/docker-mailserver) is a production-ready fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) running inside a container. Only configuration files, no SQL database. 

[Diun](https://github.com/crazy-max/diun) is a CLI application written in Go and delivered as a single executable (and a Docker image) to receive notifications when a Docker image is updated on a Docker registry.

[iRedMail](https://www.iredmail.org/) is a self-hosted email server.

[iRedMail Easy](https://www.iredmail.org/easy.html) is a web-based deployment platform, it offers an easy to use web interface to help you deploy iRedMail server, keep your server up to date, also get fast and professional technical support from iRedMail team.

[Spider Email Archiver](https://spiderd.io/) is  an On-Premises Email Archiving Software.

[MailCow](https://github.com/mailcow/mailcow-dockerized) is a self-hosted email server.

[Nextcloud Talk](https://nextcloud.com/talk/) is a on-premises, private audio/video conferencing and text chat through browser and mobile interfaces with integrated screen sharing and SIP integration.

[Poste.io Email Server](https://poste.io/) is self-hosted SMTP + IMAP + POP3 + Antispam + Antivirus Web administration + Web email. It is easy setup with a [DNS guide]((https://poste.io/doc/configuring-dns)) for protect from spam.