Awesome-Selfhosted
Self-hosting is the practice of locally hosting and managing applications instead of renting from SaaSS providers.
This is a list of Free Software network services and web applications which can be hosted locally. Non-Free software is listed on the Non-Free page.
See Contributing.
Table of contents
Software
Analytics
Please visit Awesome Analytics
Archiving and Digital Preservation (DP)
AGPL-3.0-only PHP
ArchiveBox - Self-hosted wayback machine that creates HTML & screenshot archives of sites from your bookmarks, browsing history, RSS feeds, or other sources. (Source Code) MIT Python
Archivematica - Mature digital preservation system designed to maintain standards-based, long-term access to collections of digital objects. (Demo, Source Code) AGPL-3.0-only Python
ArchivesSpace - Archives information management application for managing and providing Web access to archives, manuscripts and digital objects. (Demo, Source Code) ECL-2.0 Ruby
CKAN - CKAN is a tool for making open data websites. (Source Code) AGPL-3.0 Python
Collective Access - Providence - Highly configurable Web-based framework for management, description, and discovery of digital and physical collections supporting a variety of metadata standards, data types, and media formats. (Source Code) GPL-3.0-only PHP
Horahora - Video hosting website and video archival manager for Niconico, Bilibili, and Youtube. MIT Go
Automation
Apache-2.0 Java
Actionsflow ⚠ - The free Zapier/IFTTT alternative for developers to automate your workflows based on Github actions. MIT Docker/Nodejs
ActiveWorkflow - An intelligent process and workflow automation platform based on software agents. MIT Ruby
Alltube - Web interface for youtube-dl, a program to download videos and audio from more than 100 websites. (Source Code) GPL-3.0 PHP
AmIUnique - Learn how identifiable you are on the Internet (browser fingerprinting tool). (Source Code) MIT Java
Baserow - Open source online database tool and Airtable alternative. Create your own database without technical experience. (Source Code) MIT Python/Nodejs
Beehive - Flexible event and agent system, which allows you to create your own agents that perform automated tasks triggered by events and filters. AGPL-3.0 Go
betanin - Music organization man-in-the-middle of your torrent client and music player. Based on beets.io, similar to Sonarr and Radarr. GPL-3.0 Python
ChiefOnboarding - Employee onboarding platform that allows you to provision user accounts and create sequences with todo items, resources, text/email/Slack messages, and more! Available as a web portal and Slack bot. (Source Code) AGPL-3.0 Python
CouchPotato - CouchPotato is an automatic Video Library Manager for Movies. Automatic torrent/nzb searching, downloading, and processing at the qualities you want. (Source Code) GPL-3.0 Python
Episodes ⚠ - Self Hosted TV show Episode tracker and recommender built using django, bootstrap4. MIT Python
Exadel CompreFace - face recognition system that provides REST API for face recognition, face detection, and other face services, and is easily deployed with docker. There are SDKs for Python and JavaScript languages. Can be used without prior machine learning skills. (Source Code) Apache-2.0 Docker/Java/Nodejs
feed2toot - Feed2toot parses a RSS feed, extracts the last entries and sends them to Mastodon. (Source Code) GPL-3.0 Python
feedmixer - FeedMixer is a WSGI (Python3) micro web service which takes a list of feed URLs and returns a new feed consisting of the most recent n entries from each given feed(Returns Atom, RSS, or JSON). (Demo) WTFPL Python
Headphones - Automated music downloader for NZB and Torrent, written in Python. It supports SABnzbd, NZBget, Transmission, µTorrent, Deluge and Blackhole. GPL-3.0 Python
Healthchecks - Django app which listens for pings and sends alerts when pings are late. (Source Code) BSD-3-Clause Python
homebank-converter - Web app to convert an export bank file to compatible Homebank csv. (Demo) AGPL-3.0 HTML5
HRConvert2 - Drag-and-drop file conversion server with session based authentication, automatic temporary file maintenance, and logging capability. GPL-3.0 PHP
Huginn - Allows you to build agents that monitor and act on your behalf. MIT Ruby
Kibitzr - Lightweight personal web assistant with powerful integrations. (Source Code) MIT Python
Krayin - Free and Opensource Laravel CRM Application. (Source Code) MIT PHP
LazyLibrarian ⚠ - LazyLibrarian is a program to follow authors and grab metadata for all your digital reading needs. It uses a combination of Goodreads Librarything and optionally GoogleBooks as sources for author info and book info. GPL-3.0 Python
Leon - Open-source personal assistant who can live on your server. (Source Code) MIT Nodejs
Lidarr - Lidarr is a music collection manager for Usenet and BitTorrent users. (Source Code) GPL-3.0 C#
Medusa - Automatic Video Library Manager for TV Shows. It watches for new episodes of your favorite shows, and when they are posted it does its magic. (Source Code) GPL-3.0 Python
MeTube - Web GUI for youtube-dl, with playlist support. Allows downloading videos from dozens of websites. AGPL-3.0 Python/Nodejs/Docker
n8n - Free node based Workflow Automation Tool. Easily automate tasks across different services. (Source Code) Apache-2.0 Nodejs
nefarious - Web application that automates downloading Movies and TV Shows. GPL-3.0 Python
NocoDB - No-code platform that turns any database into a smart spreadsheet. It can be considered as an Airtable or Smartsheet alternative. (Source Code) GPL-3.0 Nodejs
OliveTin - OliveTin is a web interface for running Linux shell commands. AGPL-3.0 Go
Patrowl - Open Source, Smart and Scalable Security Operations Orchestration Platform. AGPL-3.0 Python
Podgrab - Lightweight podcast manager and automatic podcast episode downloader. It will monitor podcasts for your and download them automatically whenever a new episode goes live. GPL-3.0 Docker/Go
pyLoad - Lightweight, customizable and remotely manageable downloader for 1-click-hosting sites like rapidshare.com or uploaded.to. (Source Code) GPL-3.0 Python
Radarr - Radarr is an independent fork of Sonarr reworked for automatically downloading movies via Usenet and BitTorrent, à la Couchpotato. (Source Code) GPL-3.0 C#
SickRage - SickRage is an automatic Video Library Manager for TV Shows. Automatic torrent/nzb searching, downloading, and processing at the qualities you want. (Source Code) GPL-3.0 Python
SiteInspector - Web-based tool for catching spelling errors, grammatical errors, broken links, and other errors on websites. (Demo, Source Code) AGPL-3.0 Ruby
Sonarr - Automatic TV Shows downloader and manager for Usenet and BitTorrent. It can grab, sort and rename new episodes and automatically upgrade the quality of files already downloaded when a better quality format becomes available. (Source Code) GPL-3.0 C#
StackStorm - StackStorm (aka IFTTT for Ops) is event-driven automation for auto-remediation, security responses, troubleshooting, deployments, and more. Includes rules engine, workflow, 160 integration packs with 6000+ actions and ChatOps. (Source Code) Apache-2.0 Python
WebUI-aria2 - Interface to interact with the aria2 downloader. Very simple to use, just download and open index.html in any web browser. (Demo) MIT HTML5
ydl_api - Simple youtube-dl REST API to launch downloads on a distant server. Unlicense Python
YoutubeDL-Material - Material Design inspired YouTube downloader, based on youtube-dl. Supports playlists, quality select, search, dark mode and much more, all with a clean and modern design. MIT Nodejs
Zenbot - Zenbot is a lightweight, extendable, artificially intelligent trading bot for Bitcoin, Ether, Litecoin, and more. MIT Nodejs
ZeroQueue - A low-code queue management system that lets you run scheduled jobs for anything. GPL-3.0 Nodejs
µTask - µTask is an automation engine that models and executes business processes declared in yaml. BSD-3-Clause Go
Blogging Platforms
See also: WeblogMatrix
Apache-2.0 Javascript
Blog - Facebook-styled blog. Free, extremely lightweight, single-user and easy to install. (Demo) GPL-3.0 PHP
Blogotext - Free blog-engine written in PHP and using SQLite. This offers you both an unmatched simplicity during installation and great performances. MIT PHP
Bludit ⚠ - Simple application to build a site or blog in seconds. Bludit uses flat-files (text files in JSON format) to store posts and pages. (Demo, Source Code) MIT PHP
Cadmus - Cadmus is an extremely lightweight, flat-file blogging platform powered by Markdown. MIT PHP
Canvas - A Laravel publishing platform. (Source Code) MIT PHP
Chyrp Lite - Extra-awesome, extra-lightweight blog engine. (Source Code) BSD-3-Clause PHP
Dante Stories - Self hosted Medium platform built with Ruby on Rails. (Source Code) MIT Ruby
Dotclear - Take control over your blog. (Source Code) GPL-2.0 PHP
Formtools - Powerful, flexible, free and open source PHP/MySQL script to manage your forms and data. (Source Code) GPL-2.0 PHP
Ghost - Just a blogging platform. (Source Code) MIT Nodejs
Haven - Private blogging system with markdown editing and built in RSS reader. (Demo, Source Code) MIT Ruby
Hotglue - Freehand CMS which allows to construct websites directly in a web-browser. It uses flat files for storage and provides an intuitive GUI. (Demo, Source Code) GPL-3.0 PHP
htmly - Databaseless Blogging Platform (Flat-File Blog). (Demo, Source Code) GPL-2.0 PHP
Known - A collaborative social publishing platform. (Source Code) Apache-2.0 PHP
Plume - Federated blogging engine, based on ActivityPub. (Source Code) AGPL-3.0 Rust
PluXml - XML-based blog/CMS platform. (Source Code) GPL-1.0 PHP
Serendipity - Serendipity (s9y) is a highly extensible and customizable PHP blog engine using Smarty templating. (Source Code) BSD-3-Clause PHP
Booking and Scheduling
GPL-3.0 Java
Calendso - The open-source online appointment scheduling system. (Demo, Source Code) MIT Nodejs
Easy!Appointments - A highly customizable web application that allows your customers to book appointments with you via the web. (Demo, Source Code) GPL-3.0 PHP
Bookmarks and Link Sharing
Apache-2.0 Java
Espial - An open-source, web-based bookmarking server. AGPL-3.0 Haskell
Firefox Account Server - This allows you to host your own Firefox accounts server. (Source Code) MPL-2.0 Nodejs, Java
Firefox Sync Server - Sync Firefox bookmarks, passwords, history, tabs, preferences. MPL-2.0 Python
Geekmarks - Personal bookmarking service focused on speed and organization using hierarchical tags. (Source Code) BSD-2-Clause Go
golinks - Web application that allows you to create smart bookmarks, commands and aliases by pointing your web browser's default search engine at a running instance. Similar to bunny1 or yubnub. (Demo) MIT Go
Hackershare - Social bookmarks website for hackers. (Demo) MIT Ruby
LinkAce - A bookmark archive with automatic backups to the Internet Archive, link monitoring, and a full REST API. Installation is done via Docker, or as a simple PHP application. (Demo, Source Code) GPL-3.0 PHP
linkding - Minimal bookmark management with a fast and clean UI. Simple installation through Docker and can run on your Raspberry Pi. (Demo) MIT Docker/Python/Nodejs
Lobsters - Run your own link aggregation site. (Source Code) BSD-3-Clause Ruby
No Fuss Bookmarks - Very simple software and service to store bookmarks especially designed for hackers (that don't need fancy interfaces, but nice API). (Source Code) GPL-3.0 Python
Pinry - The tiling image board system for people who want to save, tag, and share images, videos, and webpages. (Source Code) BSD-2-Clause Python
Reminiscence - Self-Hosted Bookmark And Archive Manager. AGPL-3.0 Python
Shaarli - Personal, minimalist, super-fast, no-database bookmarking and link sharing platform. (Demo) Zlib PHP
Shiori - Simple bookmark manager built with Go. MIT Go
ubookmark - LDAP enabled bookmarking service. (Demo, Source Code) GPL-2.0 Python
unmark - Open source to do app for links. (Source Code) MIT PHP
xBrowserSync - Open source tool for syncing browser data between browsers and devices. (Source Code) MIT Nodejs
Calendar & Contacts
See also: Comparison of CalDAV and CardDAV implementations - Wikipedia
Calendar & Contacts - CalDAV or CardDAV Servers
GPL-3.0 PHP
calypso - Python-based CalDAV and CardDAV server, forked from Radicale. (Source Code) GPL-3.0 Python
DAViCal - Server for calendar sharing (CalDAV) that uses a PostgreSQL database as a data store. (Source Code) GPL-2.0 PHP
Davis - A simple, dockerizable and fully translatable admin interface for sabre/dav based on Symfony 5 and Bootstrap 4, largely inspired by Baïkal. MIT PHP
DecSync CC - Serverless contacts, calendar synchronization using your own file syncing method i.e Syncthing, Nextcloud etc. (Source Code) GPL-3.0 Kotlin
Etebase (EteSync) - End-to-end encrypted and journaled personal information server supporting calendar and contact data, offering its own clients. (Source Code) AGPL-3.0 Python/Django
Radicale - Simple calendar and contact server with extremely low administrative overhead. (Source Code) GPL-3.0 Python
SabreDAV - Open source CardDAV, CalDAV, and WebDAV framework and server. (Source Code) MIT PHP
Xandikos - Open source CardDAV and CalDAV server with minimal administrative overhead, backed by a Git repository. (Source Code) GPL-3.0 Python
Calendar & Contacts - CalDAV or CardDAV Web-based Clients
GPL-3.0 PHP
EteSync Web - EteSync's official Web-based client (i.e., their Web app). (Demo, Source Code) AGPL-3.0 Javascript
InfCloud - Open source CalDAV/CardDAV web client implementation. (Demo, Source Code) AGPL-3.0 Javascript
Communication
Communication - Custom Communication Systems
Apache-2.0 Java
Centrifugo - Language-agnostic real-time messaging (Websocket or SockJS) server. (Demo) MIT Go
Chaskiq - Full featured livechat, helpcenter and CRM as an alternative to Intercom & Drift, Crisp and others. (Source Code) AGPL-3.0 Ruby
Chatwoot - Self-hosted customer communication platform, an alternative to Intercom & Zendesk. (Source Code) MIT Ruby
Cherry - Tiny webchat server. GPL-2.0 Go
Conduit - A simple, fast, and reliable chat server powered by Matrix. (Source Code) Apache-2.0 Rust
Darkwire.io - End-to-end encrypted instant web chat. MIT Nodejs
Element - Fully-featured Matrix client for Web, iOS & Android. (Source Code) Apache-2.0 Javascript
Enigma Reloaded - DIY Message and file encryption for any platform. GPL-3.0 Javascript
Freenet - Anonymously share files, browse and publish freesites (web sites accessible only through Freenet) and chat on forums. (Source Code) GPL-2.0 Java
GNUnet - Free software framework for decentralized, peer-to-peer networking. (Source Code) GPL-3.0 C
Gotify - Self-hosted notification server with Android and CLI clients, similar to PushBullet. (Source Code, Clients) MIT Go
Hawkpost - HawkPost is a web app that lets you create unique links that you can share with a person that desires to send you important information but doesn't know how to encrypt it. The message is encrypted in their browser and sent to your email address. (Source Code) MIT Python
Jami - Free and universal communication platform which preserves the user's privacy and freedoms (formerly GNU Ring). (Source Code) GPL-3.0 C++
Jitsi Meet - Jitsi Meet is an OpenSource (MIT) WebRTC Javascript application that uses Jitsi Videobridge to provide high quality, scalable video conferences. (Source Code) MIT Javascript
Jitsi Video Bridge - WebRTC compatible Selective Forwarding Unit (SFU) that allows for multiuser video communication. (Source Code) Apache-2.0 Java
KChat - PHP Based Live Chat Application. Apache-2.0 PHP
LeapChat - Ephemeral, encrypted, in-browser chat rooms. AGPL-3.0 Javascript
Lets-Chat - Self hosted chat suite written in Node. (Source Code) MIT Nodejs
LibreNews - Decentralized and secure breaking news notification system. (Source Code) GPL-3.0 Python
Live Helper Chat - Live Support chat for your website. (Source Code) Apache-2.0 PHP
LiveKit - Modern, scalable WebRTC conferencing platform with client SDKs. (Demo, Source Code) Apache-2.0 Go
Matrix Console Web - Web client meant to be a showcase of Matrix capabilities, and reference implementation of the Matrix standard. (Source Code) Apache-2.0 Javascript
Mattermost - Open-source, on-prem Slack-alternative. It can be integrated with Gitlab. (Source Code) AGPL-3.0/Apache-2.0 Go
MiAOU - Multi-room persistent chat server. (Source Code) MIT Nodejs
Mibew - Mibew Messenger is an open-source live support application written in PHP and MySQL. It enables one-on-one chat assistance in real-time directly from your website. (Demo, Source Code) Apache-2.0 PHP
Mumble - Low-latency, high quality voice/text chat software. (Source Code, Clients) BSD-3-Clause C++
OTS - One-Time-Secret sharing platform with a symmetric 256bit AES encryption in the browser. (Source Code) Apache-2.0 Go
Papercups - An open source live customer chat web app written in Elixir. (Demo, Source Code) MIT Elixir
PushBits - Self-hosted notification server for relaying push notifications via Matrix, similar to PushBullet and Gotify. ISC Go
pWS - pWS is a free, open-source Pusher drop-in alternative. MIT Nodejs
Rallly - Rallly is a free collaborative scheduling service. (Source Code) CC-BY-SA-4.0 Nodejs
RetroShare - Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer. (Source Code) GPL-2.0 C++
Rocket.Chat - Teamchat solution similar to Gitter.im or Slack. (Source Code) MIT Nodejs
Shhh - Keep secrets out of emails or chat logs, share them using secure links with passphrase and expiration dates. MIT Python
Spectrum 2 - Spectrum 2 is an open source instant messaging transport. It allows users to chat together even when they are using different IM networks. (Source Code) GPL-3.0 C++
Spreed - WebRTC audio/video calls, conferencing server, and web client. (Source Code) AGPL-3.0 Go
StoneAge Messenger - A self-hosted Android messenger, S3-compatible storage is the only backend needed. (Source Code, Clients) GPL-3.0 Java
Synapse - Server for Matrix, an open standard for decentralized persistent communication. (Source Code) Apache-2.0 Python
Syndie - Syndie is a libre system for operating distributed forums. CC0-1.0 Java
TextBelt ⚠ - Outgoing SMS API that uses carrier-specific gateways to deliver your text messages for free, and without ads. MIT Javascript
Tinode - Instant messaging platform. Backend in Go. Clients: Swift iOS, Java Android, JS webapp, scriptable command line; chatbots. (Demo, Source Code, Clients) GPL-3.0 Go
Tox - Distributed, secure messenger with audio and video chat capabilities. (Source Code) GPL-3.0 C
Tuber - Peer-to-peer video chat that works. (Source Code) MIT Javascript
WBO - A web Whiteboard to collaborate in real-time on schemas, drawings, and notes. (Demo) AGPL-3.0 Nodejs/Docker
ZeroNet ⚠ - Open, free, and uncensorable websites, using Bitcoin cryptography and BitTorrent network. (Source Code) GPL-2.0 Python
Zulip - Zulip is a powerful, open source group chat application. (Source Code) Apache-2.0/Other Python
Communication - Email
Communication - Email - Complete Solutions
Simple deployment of a mail server, e.g. for inexperienced or impatient admins.
MIT PHP
DebOps - Your Debian-based data center in a box. A set of general-purpose Ansible roles that can be used to manage Debian or Ubuntu hosts. (Source Code) GPL-3.0-only YAML/Ansible/Python
docker-mailserver - Fullstack but simple mail server (smtp, imap, antispam, antivirus, etc.). Only configuration files, no SQL database. Keep it simple and versioned. Easy to deploy and upgrade. (Source Code) MIT Docker
emailwiz - Luke Smith's bash script to completely automate the setup of a Postfix/Dovecot/SpamAssassin/OpenDKIM server on debian. GPL-3.0 Bash
Excision Mail - Fullstack, security focused mailserver based on OpenSMTPD for OpenBSD using ansible. ISC Shell/Ansible
homebox - Suite of Ansible scripts to deploy a fully functional mail server on Debian. Unobtrusive and automatic as much as possible, focusing on stability and security. GPL-3.0 Shell
Inboxen - Inboxen is a service that provides you with an infinite number of unique inboxes. (Source Code) GPL-3.0 Python
iRedMail - Full-featured mail server solution based on Postfix and Dovecot. (Source Code) GPL-3.0 Shell
Maddy Mail Server - All-in-one mail server that implements SMTP (both MTA and MX) and IMAP. Replaces Postfix, Dovecot, OpenDKIM, OpenSPF, OpenDMARC with single daemon. GPL-3.0 Go
Mail-in-a-Box - Turns any Ubuntu server into a fully functional mail server with one command. (Source Code) CC0-1.0 Shell
Mailcow - Mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administration. (Source Code) GPL-2.0 Docker/PHP
Mailu - Mailu is a simple yet full-featured mail server as a set of Docker images. (Source Code) MIT Docker/Python
Modoboa - Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface. (Source Code) ISC Python
Ptorx - Email privacy. Anonymously send and receive with alias forwarding. GPL-3.0 Nodejs
Simple NixOS Mailserver - Complete mailserver solution leveraging the Nix Ecosystem. GPL-3.0 Nix
SimpleLogin - Open source email alias solution to protect your email address. Comes with browser extensions and mobile apps. (Source Code) MIT Docker/Python
wildduck - Scalable no-SPOF IMAP/POP3 mail server. (Source Code) EUPL-1.2 Nodejs
Communication - Email - Mail Delivery Agents
MDAs - IMAP/POP3 software
BSD-3-Clause-Attribution C
Dovecot - IMAP and POP3 server written primarily with security in mind. (Source Code) MIT/LGPL-2.1 C
MailForm - Lightweight self-hosted open source alternative to Formspree and SendGrid. Apache-2.0 Nodejs
Piler - feature-rich open source email archiving solution. (Source Code) GPL-3.0 C
Communication - Email - Mail Transfer Agents
MTAs / SMTP servers
Apache-2.0 Go
Courier MTA - Fast, scalable, enterprise mail/groupware server providing ESMTP, IMAP, POP3, webmail, mailing list, basic web-based calendaring and scheduling services. (Source Code) GPL-3.0 C
Exim - Message transfer agent (MTA) developed at the University of Cambridge. (Source Code) GPL-3.0 C
Haraka - High-performance, pluginable SMTP server written in Javascript. (Source Code) MIT Javascript
MailCatcher - Ruby gem that deploys a simply SMTP MTA gateway that accepts all mail and displays in web interface. Useful for debugging or development. (Source Code) MIT Ruby
Maildrop - Disposable email SMTP server, also useful for development. MIT Scala
MailHog - Small Golang executable which runs an SMTP MTA gateway that accepts all mail and displays in web interface. Useful for debugging or development. MIT Go
OpenSMTPD - Secure SMTP server implementation from the OpenBSD project. (Source Code) ISC C
Postfix - Fast, easy to administer, and secure Sendmail replacement. IPL-1.0 C
Qmail - Secure Sendmail replacement. (Source Code) CC0-1.0 C
Sendmail - Message transfer agent (MTA). Sendmail C
Slimta - Mail Transfer Library built on Python. (Source Code) MIT Python
Communication - Email - Mailing Lists and Newsletters
Mailing lists servers and mass mailing software - one message to many recipients.
GPL-2.0 Perl
HyperKitty - Open source Django application to provide a web interface to access GNU Mailman v3 archives. (Demo, Source Code) GPL-3.0 Python
Listmonk - High performance, self-hosted newsletter and mailing list manager with a modern dashboard. (Source Code) AGPL-3.0 Go
Mailman - The Gnu mailing list server. GPL-3.0 Python
Mailtrain - Self hosted newsletter application. (Source Code) GPL-3.0 Nodejs
MailyHerald - Self-hosted Mailchimp alternative that you can easily integrate with your site. Helps you send and manage your application mailings. It supports email marketing and conducting the daily stream of notifications you send to your users. (Source Code) LGPL-3.0 Ruby
Mautic - Mautic is marketing automation software (email, social and more). (Source Code) GPL-3.0 PHP
phpList - Newsletter and email marketing with advanced management of subscribers, bounces, and plugins. (Source Code) AGPL-3.0 PHP
Postal - Fully featured open source mail delivery platform for incoming and outgoing e-mail. (Source Code) MIT Ruby
Postorius - Web user interface to access GNU Mailman. (Source Code) GPL-3.0 Python
Schleuder - GPG-enabled mailing list manager with resending-capabilities. (Source Code) GPL-3.0 Ruby
Sympa - Mailing list manager. GPL-2.0 Perl
Communication - Email - Webmail Clients
AGPL-3.0 PHP
Cypht - Feed reader for your email accounts. (Source Code) LGPL-2.1 PHP
IMP - HORDE application that provides webmail access to IMAP and POP3 accounts. (Demo, Source Code) GPL-2.0 PHP
Isotope Mail - Microservice based webmail client built with ReactJS and Spring. (Source Code) Apache-2.0 Docker/Java
MailCare - Open source disposable email address service. (Source Code) MIT PHP
Mailpile - Webmail client with search, filtering, encryption features and more. (Source Code) AGPL-3.0 Python
RainLoop - Simple, modern and fast webmail with IMAP/SMTP Support and multi accounting. (Demo, Source Code). AGPL-3.0 PHP
Roundcube - Browser-based IMAP client with an application-like user interface. (Source Code) GPL-3.0 PHP
SquirrelMail - Another browser-based IMAP client. (Source Code) GPL-2.0 PHP
Communication - IRC
IRC communication software
Artistic-2.0 Perl
Dispatch - Self-hosted web IRC client written in Go. (Demo) MIT Go
Ergo - Modern IRCv3 server written in Go, combining the features of an ircd, a services framework, and a bouncer. (Source Code) MIT Go
Glowing Bear - A web frontend for WeeChat. (Demo) GPL-3.0 Javascript
InspIRCd - Modular IRC server written in C++ for Linux, BSD, Windows, and macOS. (Source Code) GFDL-1.2-only C++
Kiwi IRC - Responsive web IRC client with theming support. (Demo, Source Code) Apache-2.0 Nodejs
ngircd - Free, portable and lightweight Internet Relay Chat server for small or private networks. (Source Code) GPL-2.0 C
Quassel IRC - distributed IRC client, meaning that one (or multiple) client(s) can attach to and detach from a central core. (Source Code) GPL-2.0 C++
Robust IRC - RobustIRC is IRC without netsplits. Distributed IRC server, based on RobustSession protocol. (Source Code) BSD-3-Clause Go
The Lounge - Self-hosted web IRC client. (Demo, Source Code) MIT Nodejs
Tiny Tiny IRC - An open source AJAX-powered chat platform with support for IRC (Source Code). GPL-3.0 PHP/Java
UnrealIRCd - Modular, advanced and highly configurable IRC server written in C for Linux, BSD, Windows, and macOS. (Source Code) GPL-2.0 C
Weechat - Fast, light and extensible chat client. GPL-3.0 C
ZNC - Advanced IRC bouncer. (Source Code) Apache-2.0 C++
Communication - SIP
GPL-2.0 C
ASTPP - is an Open Source VoIP Billing Solution for Freeswitch. It supports prepaid and postpaid billing with call rating and credit control. It also provides many other features. (Source Code) AGPL-3.0 PHP
Freepbx - Web-based open source GUI that controls and manages Asterisk. (Source Code) GPL-2.0 PHP
FreeSWITCH - Scalable open source cross-platform telephony platform. (Source Code) MPL-2.0 C
FusionPBX - Open source project that provides a customizable and flexible web interface to the very powerful and highly scalable multi-platform voice switch called FreeSWITCH. (Source Code) MPL-1.1 PHP
Kamailio - Modular SIP server (registrar/proxy/router/etc). (Source Code) GPL-2.0 C
Kazoo - KAZOO is an open-source, highly scalable software platform designed to provide carrier-grade VoIP switch functions and features. (Source Code) MPL-1.1 Erlang
Ostel - Secure SIP telephony setup with ZRTP encryption. GPL-3.0 Ruby
Routr - A lightweight sip proxy, location server, and registrar for a reliable and scalable SIP infrastructure. (Source Code) MIT Javascript
SIP3 - VoIP troubleshooting and monitoring platform. (Demo, Source Code) Apache-2.0 Kotlin
SIPCAPTURE Homer - Troubleshooting and monitoring VoIP calls. (Source Code) AGPL-3.0 Angular/C
SipXcom - Open source unified communications system. (Source Code) AGPL-3.0 Java
Wazo - Full-featured IPBX solution built atop Asterisk with integrated Web administration interface and REST-ful API. (Source Code) GPL-3.0 Python
Yeti-Switch - Transit class4 softswitch(SBC) with integrated billing and routing engine and REST API. (Demo, Source Code) GPL-2.0 C++/Ruby
Communication - Social Networks and Forums
LGPL-2.1 Python
Anahita - Open Source Social Networking Framework and Platform. (Source Code) GPL-3.0 PHP
AsmBB - A fast, SQLite-powered forum engine written in ASM. (Source Code) EUPL-1.2 Assembly
bbPress - bbPress is forum software with a twist from the creators of WordPress. Easily setup discussion forums inside your WordPress.org powered site. (Source Code) GPL-2.0 PHP
Bibliogram ⚠ - An alternative front-end for Instagram. (Source Code) AGPL-3.0 Nodejs
Bootcamp - Enterprise social network. (Source Code) MIT Python
Buddycloud - Tools, libraries, services and a community to build user-to-user, group and social messaging into your app. Saves time. Scales up. Supports you. (Source Code) Apache-2.0 Java
BuddyPress - Powerful plugin that takes your WordPress.org powered site beyond the blog with social-network features like user profiles, activity streams, user groups, and more. (Source Code) GPL-2.0 PHP
Cactus Comments - Cactus Comments is a federated comment system for the open web built on Matrix. (Demo, Source Code) GPL-3.0 Python
cartulary - RSS reader, readability tool, article archiver, microblogger, social graph manager and reading list manager. CDDL-1.0 PHP
Commento - Commento is a discussion platform that you can embed on your blog, news articles, and any place where you want your readers to add comments. MIT Go
Coral - A better commenting experience from Vox Media. (Source Code) Apache-2.0 Nodejs
diaspora* - Distributed social networking server. (Demo, Source Code) AGPL-3.0 Ruby
Discourse - Advanced forum / community solution based on Ruby and JS. (Demo, Source Code) GPL-2.0 Ruby
dyu comments - Real-time, markdown-enabled comment engine powered by leveldb. (Demo) Apache-2.0 Java
Elgg - Powerful open source social networking engine. (Source Code) GPL-2.0 PHP
EpochTalk - Next Generation Forum Software. MIT Nodejs
Flarum - Delightfully simple forums. Flarum is the next-generation forum software that makes online discussion fun again. (Source Code) MIT PHP
FlaskBB - FlaskBB is forum software written in Python using the microframework Flask. You can easily create new topics, posts and send other users private messages. It also includes basic administration and moderation tools. (Source Code) BSD-3-Clause Python
FluxBB - Fast, light, user-friendly forum software for your website. (Source Code) GPL-2.0 PHP
Friendica - Social Communication Server. (Source Code) AGPL-3.0 PHP
Glosa - Open source commentary system easy to integrate with static pages. You can import from Disqus. GPL-3.0 Java
GNU social - Social communication software for both public and private communications. (Source Code) AGPL-3.0 PHP
Gosora - Gosora is an ultra-fast and secure forum software written in Go that balances usability with functionality. (Source Code) GPL-3.0 Go
Hubzilla - Decentralized identity, privacy, publishing, sharing, cloud storage, and communications/social platform. (Source Code) MIT PHP
HumHub - Flexible kit for private social networks. (Source Code) AGPL-3.0 PHP
Isso - Lightweight commenting server written in Python and Javascript. It aims to be a drop-in replacement for Disqus. (Source Code) MIT Python
Lemmy - A link aggregator / reddit clone for the fediverse. Reddit alternative built in Rust. (Source Code) AGPL-3.0 Rust
Libreddit ⚠ - Private front-end for Reddit written in Rust. (Source Code) AGPL-3.0 Rust
Loomio - Loomio is a collaborative decision-making tool that makes it easy for anyone to participate in decisions which affect them. (Source Code) AGPL-3.0 Ruby
Mastodon - Federated microblogging server, an alternative to GNU social. (Source Code) AGPL-3.0 Ruby
Misago - Misago is fully featured modern forum application that is fast, scalable and responsive. (Source Code) GPL-2.0 Python
Misskey - Decentralized app-like microblogging server/SNS for the Fediverse, using the ActivityPub protocol like GNU social and Mastodon. (Source Code) AGPL-3.0 Nodejs
Movim - Modern, federated social network based on XMPP, with a fully featured group-chat, subscriptions and microblogging. (Source Code) AGPL-3.0 PHP
MyBB - Free, extensible forum software package. (Source Code) LGPL-3.0 PHP
Nitter ⚠ - A alternative front end to twitter. (Source Code) AGPL-3.0 Nimble
NodeBB - Forum software built for the modern web. (Source Code) GPL-3.0 Nodejs
Orange Forum - Orange Forum is an easy to deploy forum that has minimal dependencies and uses very little javascript. (Source Code) BSD-3-Clause Go
OSSN - 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. (Source Code) GPL-2.0 PHP
phpBB - Flat-forum bulletin board software solution that can be used to stay in touch with a group of people or can power your entire website. (Source Code) GPL-2.0 PHP
PixelFed - Pixelfed is an open-source, federated platform alternate to Instagram. (Source Code) AGPL-3.0 PHP
Pleroma - Federated microblogging server, Mastodon, GNU social, & ActivityPub compatible. (Source Code) AGPL-3.0 Elixir
Pump.io - Stream server that does most of what people really want from a social network. (Source Code) Apache-2.0 Nodejs
remark42 - A lightweight and simple comment engine, which doesn't spy on users. It can be embedded into blogs, articles or any other place where readers add comments. (Demo, Source Code) MIT Go
rss2twtxt - An RSS/Atom feed aggregator command-line tool and web service that consumes RSS/Atom and produces twtxt.net feeds for consumption by twtxt clients. (Demo) MIT Go
Satellity - Yet another open source forum written in Golang, React and PostgreSQL. (Source Code) MIT Go
Scoold - Stack Overflow in a JAR. An enterprise-ready Q&A platform with full-text search, SAML, LDAP integration and social login support. (Demo, Source Code) Apache-2.0 Java
Simple Machines Forum - Free, professional grade software package that allows you to set up your own online community within minutes. (Source Code) BSD-3-Clause PHP
Socialhome - Federated and decentralized profile builder and social network engine. (Demo, Source Code) AGPL-3.0 Python
Talkyard - Create a community, where your users can suggest ideas and get questions answered. And have friendly open-ended discussions and chat (Slack/StackOverflow/Discourse/Reddit/Disqus hybrid). (Demo, Source Code) AGPL-3.0 Scala
Teddit ⚠ - Alternative Reddit front-end focused on privacy. (Source Code) AGPL-3.0 Nodejs
Thredded - Forums, feature-rich and simple. MIT Ruby
Tokumei - Anonymous microblogging platform. (Source Code) ISC rc
twister - Fully decentralized P2P microblogging platform leveraging the free software implementations of Bitcoin and BitTorrent protocols. (Source Code) MIT C++
twtxt.net - a Self-Hosted, Twitter™-like Decentralised micro-logging platform. No ads, no tracking, your content, your data. (Source Code) MIT Go
Vanilla Forums - Simple and flexible forum software. (Source Code) GPL-2.0 PHP
Zusam - Free and open-source way to self-host private forums for groups of friends or family. (Demo, Source Code) AGPL-3.0 PHP
Communication - XMPP
Extensible Messaging and Presence Protocol software
Communication - XMPP - Servers
GPL-2.0 Erlang
jackal - XMPP server with focus on stability, simple configuration and low resource consumption. Apache-2.0 Go
Kontalk - Kontalk is an Open Source Messenger, similar to WhatsApp (app for android only currently), including end-to-end encryption, server is based on Tigase XMPP Server. (Source Code) GPL-3.0 Java
Metronome IM - Fork of Prosody IM. (Source Code) MIT Lua
MongooseIM - Mobile messaging platform with a focus on performance and scalability. (Source Code) GPL-2.0 Erlang
Openfire - Real time collaboration (RTC) server. (Source Code) Apache-2.0 Java
Prosody IM - Feature-rich and easy to configure XMPP server. (Source Code) MIT Lua
Snikket - All-in-one Dockerized easy XMPP solution, including web admin and clients. (Source Code, Clients) Apache-2.0 Lua/Python
Tigase - XMPP server implementation in Java. GPL-3.0 Java
Communication - XMPP - Web Clients
MIT Javascript
Converse.js - Free and open-source XMPP chat client in your browser. (Source Code) MPL-2.0 Javascript
JSXC - Real-time XMPP web chat application with video calls, file transfer and encrypted communication. There are also versions for Nextcloud/Owncloud and SOGo. (Source Code) MIT Javascript
Libervia - Web frontend from Salut à Toi. (Source Code) AGPL-3.0 Python
Salut à Toi - Multipurpose, multi frontend, libre and decentralized communication tool. (Source Code) AGPL-3.0 Python
Community-Supported Agriculture (CSA)
Management and administration tools for community supported agriculture and food cooperatives
MIT Ruby