Self Hosted Communication systems

100 Communication systems software solutions and projects

• Mastodon

  9.9 10.0 L5 Ruby

  Your self-hosted, globally interconnected microblogging community
  

• Discourse

  9.9 10.0 L2 Ruby

  A platform for community discussion. Free, open, simple.
  

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• Rocket.Chat

  9.9 10.0 L3 TypeScript

  The communications platform that puts data protection first.
  

• Mattermost

  9.8 10.0 L1 TypeScript

  Mattermost is an open source platform for secure collaboration across the entire software development lifecycle..
  

• Penpot

  9.7 10.0 Clojure

  Penpot: The open-source design tool for design and code collaboration
  

• Reddit

  9.7 0.0 L2 Python

  DISCONTINUED. Social networking and news website where registered community members can submit content.

• Zulip

  9.7 10.0 L2 Python

  Zulip server and web application. Open-source team chat that helps teams stay productive and focused.
  

• Symphony

  9.7 9.4 L1 Java

  DISCONTINUED. A modern community

• Jitsi Meet

  9.7 9.9 L4 TypeScript

  Jitsi Meet - Secure, Simple and Scalable Video Conferences that you use as a standalone app or embed in your web application.
  

• Chatwoot

  9.6 9.8 Ruby

  Open-source live-chat, email support, omni-channel desk. An alternative to Intercom, Zendesk, Salesforce Service Cloud etc. 🔥💬
  

• ZeroNet

  9.5 0.0 JavaScript

  ZeroNet - Decentralized websites using Bitcoin crypto and BitTorrent network
  

• Flarum

  9.3 5.5 PHP

  Simple forum software for building great communities.
  

• Listmonk

  9.3 9.6 Go

  High performance, self-hosted, newsletter and mailing list manager with a modern dashboard. Single binary app.
  

• diaspora*

  9.3 7.6 L4 Ruby

  A privacy-aware, distributed, open source social network.
  

• NodeBB

  9.3 9.9 L2 JavaScript

  Node.js based forum software built for the modern web
  

• Synapse

  9.2 9.8 L3 Python

  DISCONTINUED. Synapse: Matrix homeserver written in Python/Twisted.
  

• Mail-in-a-Box

  9.2 7.7 L3 Python

  Mail-in-a-Box helps individuals take back control of their email by defining a one-click, easy-to-deploy SMTP+everything else server: a mail server in a box.
  

• Postal

  9.2 3.4 Ruby

  📮 A fully featured open source mail delivery platform for incoming & outgoing e-mail
  

• MailHog

  9.1 0.0 Go

  Web and API based SMTP testing
  

• Tinode

  9.1 7.2 Go

  Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots
  

• Lemmy

  9.0 9.7 Rust

  🐀 A link aggregator and forum for the fediverse
  

• docker-mailserver

  9.0 8.7 Shell

  DISCONTINUED. A fullstack but simple mail server (SMTP, IMAP, LDAP, Antispam, Antivirus, etc.) using Docker. [Moved to: https://github.com/docker-mailserver/docker-mailserver]
  

• Vector

  9.0 10.0 L4 TypeScript

  A glossy Matrix collaboration client for the web.
  

• Gotify

  8.9 7.5 Go

  A simple server for sending and receiving messages in real-time per WebSocket. (Includes a sleek web-ui)
  

• Mautic

  8.9 10.0 L2 PHP

  Mautic: Open Source Marketing Automation Software.
  

• Lets-Chat

  8.9 0.0 L5 JavaScript

  Self-hosted chat app for small teams
  

• Mailcow

  8.8 9.5 JavaScript

  mailcow: dockerized - 🐮 + 🐋 = 💕
  

• Tox

  8.8 0.0 L3 C

  The future of online communications.
  

• Telescope

  8.8 0.0 JavaScript

  DISCONTINUED. 🌋 A toolkit to quickly build apps with React, GraphQL & Meteor
  

• Misskey

  8.8 9.9 TypeScript

  🌎 A completely free and open interplanetary microblogging platform 🚀
  

• Mailpile

  8.7 4.0 L2 Python

  A free & open modern, fast email client with user-friendly encryption and privacy features
  

• Centrifugo

  8.6 8.7 Go

  Scalable real-time messaging server in a language-agnostic way. Self-hosted alternative to Pubnub, Pusher, Ably. Set up once and forever.
  

• Roundcube

  8.5 9.5 L3 PHP

  The Roundcube Webmail suite
  

• ejabberd

  8.5 9.7 Erlang

  Robust, Ubiquitous and Massively Scalable Messaging Platform (XMPP, MQTT, SIP Server)
  

• HumHub

  8.5 9.5 L4 PHP

  HumHub is an Open Source Enterprise Social Network. Easy to install, intuitive to use and extendable with countless freely available modules.
  

• Mumble

  8.4 9.7 L1 C++

  Mumble is an open-source, low-latency, high quality voice chat software.
  

• LibreNMS

  8.4 9.9 L2 PHP

  Community-based GPL-licensed network monitoring system
  

• Berty

  8.4 7.6 TypeScript

  Berty is a secure peer-to-peer messaging app that works with or without internet access, cellular data or trust in the network
  

• Mail For Good

  8.3 0.0 JavaScript

  DISCONTINUED. An open source email campaign management tool for nonprofits
  

• mail-server

  8.2 9.6 Rust

  Secure & Modern All-in-One Mail Server (IMAP, JMAP, POP3, SMTP)
  

• PixelFed

  8.2 9.9 PHP

  Photo Sharing. For Everyone.
  

• Mailu

  8.2 8.7 Python

  Insular email distribution - mail server as Docker images
  

• Tutanota makes encryption easy

  8.1 9.9 TypeScript

  Tuta is an email service with a strong focus on security and privacy that lets you encrypt emails, contacts and calendar entries on all your devices.
  

• MailCatcher

  8.1 5.2 L5 Ruby

  Catches mail and serves it through a dream.
  

• The Lounge

  8.0 6.0 L4 TypeScript

  💬 ‎ Modern, responsive, cross-platform, self-hosted web IRC client
  

• Mailtrain

  8.0 0.0 JavaScript

  Self hosted newsletter app
  

• Patchwork

  7.9 8.6 JavaScript

  DISCONTINUED. A decentralized messaging and sharing app built on top of Secure Scuttlebutt (SSB).
  

• Haraka

  7.9 7.6 L3 JavaScript

  A fast, highly extensible, and event driven SMTP server
  

• Friends

  7.9 0.0 L4 JavaScript

  DISCONTINUED. P2P chat powered by the web.

• RainLoop

  7.9 0.0 L3 PHP

  DISCONTINUED. Simple, modern & fast web-based email client

• Actor

  7.9 0.0 L2 Java

  DISCONTINUED. Actor Messaging platform
  

• SimpleLogin

  7.9 9.4 Python

  The SimpleLogin back-end and web app
  

• Papercups

  7.9 0.0 Elixir

  Open-source live customer chat
  

• Openfire

  7.8 9.8 L1 Java

  An XMPP server licensed under the Open Source Apache License.
  

• ProtonMail Web Client

  7.8 10.0 TypeScript

  Monorepo hosting the proton web clients
  

• Isso

  7.8 5.6 L4 Python

  a Disqus alternative
  

• remark42

  7.7 8.5 Go

  comment engine
  

• Shout

  7.6 0.0 L4 JavaScript

  DISCONTINUED. Deprecated. See fork @ https://github.com/thelounge

• Jitsi Video Bridge

  7.6 8.8 L1 Kotlin

  Jitsi Videobridge is a WebRTC compatible video router or SFU that lets build highly scalable video conferencing infrastructure (i.e., up to hundreds of conferences per server).
  

• hack.chat

  7.5 0.0 L3 JavaScript

  DISCONTINUED. A minimal, distraction-free chat application.

• Rallly

  7.5 9.8 TypeScript

  Rallly is an open-source scheduling and collaboration tool designed to make organizing events and meetings easier.
  

• Kamailio

  7.4 9.9 L2 C

  Kamailio - The Open Source SIP Server for large VoIP and real-time communication platforms -
  

• Asterisk

  7.4 9.4 L2 C

  The official Asterisk Project repository.
  

• Converse.js

  7.4 9.8 L2 JavaScript

  Web-based XMPP/Jabber chat written in JavaScript
  

• Vanilla Forums

  7.3 3.4 L2 PHP

  Vanilla is a powerfully simple discussion forum you can easily customize to make as unique as your community.
  

• Bootcamp

  7.3 0.0 CSS

  An enterprise social network
  

• TextBelt

  7.2 1.8 L3 JavaScript

  Free API for outgoing SMS
  

• flaskbb

  7.1 4.2 L4 Python

  A classic Forum Software in Python using Flask.
  

• Modoboa

  7.1 9.6 L5 Python

  Mail hosting made simple
  

• AnonAddy

  7.1 6.7 PHP

  Anonymous email forwarding
  

• phpBB

  7.1 9.8 L2 PHP

  phpBB Development: phpBB is a popular open-source bulletin board written in PHP. This repository also contains the history of version 2.
  

• Hubl.in

  7.1 0.5 L3 JavaScript

  DISCONTINUED. DEPRECATED - An easy and free video conference service based on WebRTC
  

• Weechat

  7.0 9.7 L1 C

  The extensible chat client.
  

• formspree

  7.0 0.0 L3 Python

  DISCONTINUED. The successor to this repository is actively maintained at https://formspree.io. Its source code is not available
  

• Misago

  7.0 8.6 Python

  Misago is fully featured modern forum application that is fast, scalable and responsive.
  

• Loomio

  7.0 9.8 L3 Ruby

  Loomio is a collaborative decision making tool
  

• Live Helper Chat

  7.0 9.8 L3 PHP

  Live Helper Chat - live support for your website. Featuring web and mobile apps, Voice & Video & ScreenShare. Supports Telegram, Twilio (whatsapp), Facebook messenger including building a bot.
  

• Kandan

  6.9 0.0 JavaScript

  Kandan is an Open Source Alternative to HipChat
  

• WBO

  6.7 6.8 JavaScript

  Online collaborative Whiteboard that is simple, free, easy to use and to deploy
  

• Elgg

  6.7 9.6 L3 PHP

  A social networking engine in PHP/MySQL
  

• Oragono

  6.7 8.6 Go

  A modern IRC server (daemon/ircd) written in Go.
  

• Pump.io

  6.6 0.0 L4 JavaScript

  Social server with an ActivityStreams API
  

• ZNC

  6.5 8.5 L1 C++

  Official repository for the ZNC IRC bouncer
  

• MongooseIM

  6.4 9.9 Erlang

  MongooseIM is Erlang Solutions' robust, scalable and efficient XMPP server, aimed at large installations. Specifically designed for enterprise purposes, it is fault-tolerant and can utilise the resources of multiple clustered machines.
  

• Coral

  6.4 9.6 TypeScript

  A better commenting experience from Vox Media
  

• wildduck

  6.4 8.4 JavaScript

  Opinionated email server
  

• RetroShare

  6.3 9.2 L1 C++

  RetroShare is a Free and Open Source cross-platform, Friend-2-Friend and secure decentralised communication platform.
  

• Homer

  6.3 7.7 Shell

  HOMER - 100% Open-Source SIP, VoIP, RTC Packet Capture & Monitoring
  

• OSSN

  6.3 8.9 L3 PHP

  Open Source Social Network (OSSN) is a social networking software written in PHP. It allows you to make a social networking website and helps your members build social relationships, with people who share similar professional or personal interests. It is available in 19 international languages.
  

• Friendica

  6.3 0.0 L1 PHP

  Friendica Communications Platform
  

• Movim

  6.2 9.7 L3 JavaScript

  Movim - Decentralized social platform
  

• FusionPBX

  6.2 9.9 PHP

  Official FusionPBX - A full-featured domain based multi-tenant PBX and voice switch for FreeSwitch.
  

• Node-Chat

  6.1 0.0 L2 JavaScript

  :speech_balloon: Chat application built with NodeJS and Material Design
  

• twister

  6.1 0.0 L1 C++

  twister core / daemon
  

• Twake

  6.1 0.9 TypeScript

  Twake is a secure open source collaboration platform to improve organizational productivity.
  

• Candy

  6.1 0.0 L3 JavaScript

  DISCONTINUED. JavaScript-based multi-user chat client for XMPP.
  

• Kazoo

  6.0 0.5 Erlang

  The core of an open-source, distributed, highly scalable platform designed to provide robust telecom services
  

• MyBB

  6.0 6.7 L1 PHP

  MyBB is a free and open source forum software.
  

• DebOps

  6.0 9.6 Jinja

  DebOps - Your Debian-based data center in a box
  

• Talkyard

  5.9 9.4 TypeScript

  A community discussion platform: Brings together the main features from StackOverflow, Slack, Discourse, Reddit, and Disqus blog comments.
  

* Code Quality Rankings and insights are calculated and provided by Lumnify.
They vary from L1 to L5 with "L5" being the highest.

SaaSHub - Software Alternatives and Reviews

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Popular Comparisons

• Mailcow
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• iRedMail
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• diaspora*
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