- [Bookmarks & Link Sharing](#bookmarks--link-sharing)
- [Calendar and Address Books](#calendar-and-address-books)
- [Communication systems](#communication-systems)
- [Custom](#custom)
- [Email](#email)
- [Webmail clients](#webmail-clients)
- [Complete solutions](#complete-solutions)
- [Mail Transfer Agents](#mail-transfer-agents)
- [Mail Delivery Agents](#mail-delivery-agents)
- [Complete solutions](#complete-solutions)
- [Mailing lists](#mailing-lists)
- [Webmail clients](#webmail-clients)
- [IRC](#irc)
- [SIP](#sip)
- [Social Networks and Forums](#social-networks-and-forums)
- [XMPP](#xmpp)
- [XMPP Servers](#xmpp-servers)
- [XMPP Web Clients](#xmpp-web-clients)
- [SIP](#sip)
- [IRC](#irc)
- [Custom](#custom)
- [Social Networks and Forums](#social-networks-and-forums)
- [Content Management Systems (CMS)](#content-management-systems-cms)
- [E-commerce](#e-commerce)
- [Document Archiving](#document-archiving)
@ -149,22 +149,51 @@ Some [Groupware](#groupware) solutions also feature calendar/address book editin
* [CalendarServer](http://trac.calendarserver.org/) - A standards-compliant server implementing the CalDAV and CardDAV protocols. `Apache``Python`
* [calypso](http://keithp.com/calypso/) - A python-based CalDAV/CardDAV server. `unlicensed`
* [DAViCal](http://www.davical.org/) - A server for calendar sharing (CalDAV). ([Source Code](https://gitlab.com/davical-project/davical)) `MIT`
* [ownCloud calendar](https://doc.owncloud.org/server/7.0/user_manual/pim/calendar.html) - The ownCloud Calendar app enables you to create and edit events, synchronize to other calendars you might use, and create new, personalized calendars. ([Source Code ownCloud <9](https://github.com/owncloud/calendar), [Source Code ownCloud 9+](https://github.com/owncloud/calendar-rework))`AGPLv3``PHP`
* [Radicale](http://radicale.org/) - A Simple Calendar and Contact Server. ([Source Code](https://github.com/Kozea/Radicale)) `unlicensed``Python`
* [sabre/dav](http://sabre.io/) - A open source CardDAV, CalDAV and WebDAV server. ([Source Code](https://github.com/fruux/sabre-dav)) `MIT``PHP`
* [ownCloud calendar](https://doc.owncloud.org/server/7.0/user_manual/pim/calendar.html) - The ownCloud Calendar app enables you to create and edit events, synchronize to other calendars you might use, and create new, personalized calendars. ([Source Code ownCloud <9](https://github.com/owncloud/calendar), [Source Code ownCloud 9+](https://github.com/owncloud/calendar-rework))`AGPLv3``PHP`
## Communication systems
### Custom
* [Freenet](https://freenetproject.org/index.html) - Anonymously share files, browse and publish "freesites" (web sites accessible only through Freenet) and chat on forums. ([Source Code](https://github.com/freenet/fred)) `GPLv2``Java`
* [Friends](http://moose-team.github.io/friends/) - P2P chat powered by the web. ([Source Code](https://github.com/moose-team/friends)) `MIT``Nodejs`
* [Jitsi Meet](https://jitsi.org/Projects/JitsiMeet) - Jitsi Meet is an OpenSource (MIT) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, scalable video conferences. ([Source Code](https://github.com/jitsi/jitsi-meet)) `MIT ``JavaScript`
* [Jitsi Video Bridge](https://jitsi.org/Projects/JitsiVideobridge) - WebRTC compatible Selective Forwarding Unit (SFU) that allows for multiuser video communication. ([Source Code](https://github.com/jitsi/jitsi-videobridge)) `Apache``Java`
* [Kandan](http://getkandan.com/) – Kandan is an Open Source Alternative to HipChat. ([Source Code](https://github.com/kandanapp/kandan)) `AGPLv3``Ruby`
* [Lets-Chat](http://sdelements.github.io/lets-chat/) - A self hosted chat suite written in Node. ([Source](https://github.com/sdelements/lets-chat)) `MIT``JavaScript, NodeJS`
* [Mattermost](http://www.mattermost.org/) - Open-source, on-prem Slack-alternative. It can be integrated with [Gitlab](https://about.gitlab.com/). ([Source Code](https://github.com/mattermost/platform)) `AGPLv3/Apache 2.0``Go`
* [Mibew](https://mibew.org) - 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](https://mibew.org/demo2), [Source Code](https://github.com/Mibew/mibew)) `Apache``PHP/Javascript`
* [Mumblecop](https://bitbucket.org/Flandoo/mumblecop) - Stream audio from youtube and soundcloud, simulate dice rolls, or write your own commands with a simple plugin format. `MIT``Ruby`
* [Node-Chat](https://github.com/IgorAntun/node-chat) - A not-so-basic open-source chat with admin features. `MIT``Nodejs`
* [RetroShare](http://retroshare.org) - Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer. ([Source Code](https://github.com/RetroShare/RetroShare)) `GPLv2``С++`
* [Rocket.Chat](https://rocket.chat/) – Teamchat solution similar to Gitter.im or Slack. ([Source Code](https://github.com/RocketChat/Rocket.Chat)) `MIT`
* [Synapse](https://matrix.org/blog/project/synapse/) - A server for [Matrix](https://matrix.org/), an open standard for decentralized persistent communication. ([Source Code](https://github.com/matrix-org/synapse)) `Apache``Python`
* [Vector](https://matrix.org/blog/project/vector/) - A glossy Matrix web client with an emphasis on performance and usability. ([Source Code](https://github.com/vector-im/vector-web)) `Apache``Javascript`
* [Matrix Console Web](https://matrix.org/blog/project/matrix-console-web/) - A web client meant to be a showcase of Matrix capabilities, and reference implementation of the Matrix standard. ([Source Code](https://github.com/matrix-org/matrix-angular-sdk)) `Apache``Javascript`
* [Syndie](https://www.syndie.de) - Syndie is a libre system for operating distributed forums. `CC0``Java`
* [TextBelt](https://github.com/typpo/textbelt) - An outgoing SMS API that uses carrier-specific gateways to deliver your text messages for free, and without ads. ` ⚠ ``MIT``JavaScript`
* [Tox](https://tox.chat/) - A distributed, secure messenger with audio and video chat capabilities. ([Source Code](https://github.com/irungentoo/toxcore)) `GPLv3``C`
* [Tuber](https://blog.trailofbits.com/2015/12/15/self-hosted-video-chat-with-tuber/) - Peer-to-peer video chat that works. ([Source Code](https://github.com/trailofbits/tubertc)) `MIT``JavaScript`
* [Zulip](https://zulip.org) - Zulip is a powerful, open source group chat application. ([Source Code](https://github.com/zulip/zulip)) `Apache 2.0/Other``Python/Django`
### Email
#### Webmail clients
#### Complete solutions
* [Cypht](http://cypht.org/index.html) - A feed reader for your email accounts. ([Source Code](https://github.com/jasonmunro/hm3)) `GPLv2``PHP`
* [Mailpile](https://www.mailpile.is/) - Webmail client with search, filtering, encryption features and more. ([Source Code](https://github.com/mailpile/Mailpile)) `AGPLv3``Python`
* [RainLoop](http://www.rainloop.net/) - Simple, modern & fast webmail with IMAP/SMTP Support and multi accounting. ([Demo](http://demo.rainloop.net/), [Source Code](https://github.com/RainLoop/rainloop-webmail)). `AGPLv3``PHP`
* [Roundcube](https://roundcube.net) - Browser-based IMAP client with an application-like user interface. ([Screenshots](https://roundcube.net/screens/)) ([Source Code](https://github.com/roundcube/roundcubemail/)) `GPLv3``PHP`
* [SquirrelMail](http://squirrelmail.org) - Another browser-based IMAP client. ([Source Code](https://sourceforge.net/p/squirrelmail/code/HEAD/tree/)) `GPLv2``PHP`
_simple deployment of a mail server, e.g. for inexperienced or impatient admins._
* [hMailServer](https://www.hmailserver.com) - Open source e-mail server for Microsoft Windows. ([Source Code](https://github.com/hmailserver/hmailserver)) `C++`
* [Mailcow](https://mailcow.email/) - Mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administration. ([Source Code](https://github.com/andryyy/mailcow)) `GPLv2``PHP/Shell`
* [Mail-in-a-Box](https://mailinabox.email/) - Turns any Ubuntu server into a fully functional mail server with one command. `CC0``Shell/Other`
* [iRedMail](http://www.iredmail.org/) - Full-featured mail server solution based on Postfix and Dovecot.
* [Citadel](http://www.citadel.org/) - Feature packed, easy, versatile, and powerful mail server, thanks to exclusive "rooms" based architecture. ([Source Code](http://code.citadel.org/?p=citadel.git;a=summary))
* [Modoboa](http://modoboa.org/en/) - Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface. ([Source Code](https://github.com/tonioo/modoboa)) `MIT``Python`
_simple deployment of a mail server, e.g. for inexperienced or impatient admins._
* [hMailServer](https://www.hmailserver.com) - Open source e-mail server for Microsoft Windows. ([Source Code](https://github.com/hmailserver/hmailserver)) `C++`
* [Mailcow](https://mailcow.email/) - Mail server suite based on Dovecot, Postfix and other open source software, that provides a modern Web UI for administration. ([Source Code](https://github.com/andryyy/mailcow)) `GPLv2``PHP/Shell`
* [Mail-in-a-Box](https://mailinabox.email/) - Turns any Ubuntu server into a fully functional mail server with one command. `CC0``Shell/Other`
* [iRedMail](http://www.iredmail.org/) - Full-featured mail server solution based on Postfix and Dovecot.
* [Citadel](http://www.citadel.org/) - Feature packed, easy, versatile, and powerful mail server, thanks to exclusive "rooms" based architecture. ([Source Code](http://code.citadel.org/?p=citadel.git;a=summary))
* [Modoboa](http://modoboa.org/en/) - Modoboa is a mail hosting and management platform including a modern and simplified Web User Interface. ([Source Code](https://github.com/tonioo/modoboa)) `MIT``Python`
#### Mailing lists
_Mailing lists servers._
@ -210,38 +228,14 @@ _Mailing lists servers._
* [Sympa](https://www.sympa.org/) - A mailing list manager. `Perl``GPL`
### XMPP
_[Extensible Messaging and Presence Protocol](https://en.wikipedia.org/wiki/XMPP) software_
* [Metronome IM](https://lightwitch.org/metronome) - Fork of Prosody IM. ([Source](http://code.lightwitch.org/)) `MIT``Lua`
* [MongooseIM](https://www.erlang-solutions.com/products/mongooseim.html) - Fork of ejabberd. ([Source](https://github.com/esl/MongooseIM)) `MIT``Erlang`
* [Openfire](http://www.igniterealtime.org/projects/openfire/) - Real time collaboration (RTC) server. ([Source](https://github.com/igniterealtime/Openfire)) `Apache``Java`
* [Prosody IM](http://prosody.im/) - Feature-rich and easy to configure XMPP server. ([Source](http://hg.prosody.im/)) `MIT``Lua`
* [Tigase](http://www.tigase.net/content/tigase-xmpp-server) - XMPP server implementation in Java. `Java`
#### XMPP Web Clients
* [Candy](http://candy-chat.github.io/candy/) - Multi user XMPP client written in Javascript. ([Source](https://github.com/candy-chat/candy)) `MIT``JavaScript`
* [Converse.js](https://conversejs.org/) - A free and open-source XMPP chat client in your browser ([Source](https://github.com/jcbrand/converse.js)) `MPLv2``Javascript`
* [Kaiwa](http://getkaiwa.com/) - Web based chat client in the style of common paid alternatives. ([Source Code](https://github.com/digicoop/kaiwa)) `MIT``Javascript, NodeJS`
* [Kontalk](http://kontalk.org/) – Kontalk is an Open Source Messenger, similiar to WhatsApp (app for android only currently), including end-to-end encryption, server is based on Tigase XMPP Server - ([Source Code](https://github.com/kontalk)) `GPLv3`
* [Salut à Toi](http://www.salut-a-toi.org/) - Multipurpose, multi frontend, libre and decentralised communication tool. ([Source Code](http://repos.goffi.org/sat)) `AGPLv3``Python`
* [Libervia](http://wiki.goffi.org/wiki/Libervia/en) - Web frontend from Salut à Toi ([Source Code](http://repos.goffi.org/libervia)) `AGPLv3``Python`
* [Cypht](http://cypht.org/index.html) - A feed reader for your email accounts. ([Source Code](https://github.com/jasonmunro/hm3)) `GPLv2``PHP`
* [Mailpile](https://www.mailpile.is/) - Webmail client with search, filtering, encryption features and more. ([Source Code](https://github.com/mailpile/Mailpile)) `AGPLv3``Python`
* [RainLoop](http://www.rainloop.net/) - Simple, modern & fast webmail with IMAP/SMTP Support and multi accounting. ([Demo](http://demo.rainloop.net/), [Source Code](https://github.com/RainLoop/rainloop-webmail)). `AGPLv3``PHP`
* [Roundcube](https://roundcube.net) - Browser-based IMAP client with an application-like user interface. ([Screenshots](https://roundcube.net/screens/)) ([Source Code](https://github.com/roundcube/roundcubemail/)) `GPLv3``PHP`
* [SquirrelMail](http://squirrelmail.org) - Another browser-based IMAP client. ([Source Code](https://sourceforge.net/p/squirrelmail/code/HEAD/tree/)) `GPLv2``PHP`
@ -256,30 +250,14 @@ _[Extensible Messaging and Presence Protocol](https://en.wikipedia.org/wiki/XMPP
* [ZNC](http://wiki.znc.in/ZNC) - An advanced IRC bouncer. ([Source Code](https://github.com/znc/znc)) `Apache``C++`
### Custom
### SIP
* [Freenet](https://freenetproject.org/index.html) - Anonymously share files, browse and publish "freesites" (web sites accessible only through Freenet) and chat on forums. ([Source Code](https://github.com/freenet/fred)) `GPLv2``Java`
* [Friends](http://moose-team.github.io/friends/) - P2P chat powered by the web. ([Source Code](https://github.com/moose-team/friends)) `MIT``Nodejs`
* [Jitsi Meet](https://jitsi.org/Projects/JitsiMeet) - Jitsi Meet is an OpenSource (MIT) WebRTC JavaScript application that uses Jitsi Videobridge to provide high quality, scalable video conferences. ([Source Code](https://github.com/jitsi/jitsi-meet)) `MIT ``JavaScript`
* [Jitsi Video Bridge](https://jitsi.org/Projects/JitsiVideobridge) - WebRTC compatible Selective Forwarding Unit (SFU) that allows for multiuser video communication. ([Source Code](https://github.com/jitsi/jitsi-videobridge)) `Apache``Java`
* [Kandan](http://getkandan.com/) – Kandan is an Open Source Alternative to HipChat. ([Source Code](https://github.com/kandanapp/kandan)) `AGPLv3``Ruby`
* [Lets-Chat](http://sdelements.github.io/lets-chat/) - A self hosted chat suite written in Node. ([Source](https://github.com/sdelements/lets-chat)) `MIT``JavaScript, NodeJS`
* [Mattermost](http://www.mattermost.org/) - Open-source, on-prem Slack-alternative. It can be integrated with [Gitlab](https://about.gitlab.com/). ([Source Code](https://github.com/mattermost/platform)) `AGPLv3/Apache 2.0``Go`
* [Mibew](https://mibew.org) - 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](https://mibew.org/demo2), [Source Code](https://github.com/Mibew/mibew)) `Apache``PHP/Javascript`
* [Mumblecop](https://bitbucket.org/Flandoo/mumblecop) - Stream audio from youtube and soundcloud, simulate dice rolls, or write your own commands with a simple plugin format. `MIT``Ruby`
* [Node-Chat](https://github.com/IgorAntun/node-chat) - A not-so-basic open-source chat with admin features. `MIT``Nodejs`
* [RetroShare](http://retroshare.org) - Secured and decentralized communication system. Offers decentralized chat, forums, messaging, file transfer. ([Source Code](https://github.com/RetroShare/RetroShare)) `GPLv2``С++`
* [Rocket.Chat](https://rocket.chat/) – Teamchat solution similar to Gitter.im or Slack. ([Source Code](https://github.com/RocketChat/Rocket.Chat)) `MIT`
* [Synapse](https://matrix.org/blog/project/synapse/) - A server for [Matrix](https://matrix.org/), an open standard for decentralized persistent communication. ([Source Code](https://github.com/matrix-org/synapse)) `Apache``Python`
* [Vector](https://matrix.org/blog/project/vector/) - A glossy Matrix web client with an emphasis on performance and usability. ([Source Code](https://github.com/vector-im/vector-web)) `Apache``Javascript`
* [Matrix Console Web](https://matrix.org/blog/project/matrix-console-web/) - A web client meant to be a showcase of Matrix capabilities, and reference implementation of the Matrix standard. ([Source Code](https://github.com/matrix-org/matrix-angular-sdk)) `Apache``Javascript`
* [Syndie](https://www.syndie.de) - Syndie is a libre system for operating distributed forums. `CC0``Java`
* [TextBelt](https://github.com/typpo/textbelt) - An outgoing SMS API that uses carrier-specific gateways to deliver your text messages for free, and without ads. ` ⚠ ``MIT``JavaScript`
* [Tox](https://tox.chat/) - A distributed, secure messenger with audio and video chat capabilities. ([Source Code](https://github.com/irungentoo/toxcore)) `GPLv3``C`
* [Tuber](https://blog.trailofbits.com/2015/12/15/self-hosted-video-chat-with-tuber/) - Peer-to-peer video chat that works. ([Source Code](https://github.com/trailofbits/tubertc)) `MIT``JavaScript`
* [Zulip](https://zulip.org) - Zulip is a powerful, open source group chat application. ([Source Code](https://github.com/zulip/zulip)) `Apache 2.0/Other``Python/Django`
* [Metronome IM](https://lightwitch.org/metronome) - Fork of Prosody IM. ([Source](http://code.lightwitch.org/)) `MIT``Lua`
* [MongooseIM](https://www.erlang-solutions.com/products/mongooseim.html) - Fork of ejabberd. ([Source](https://github.com/esl/MongooseIM)) `MIT``Erlang`
* [Openfire](http://www.igniterealtime.org/projects/openfire/) - Real time collaboration (RTC) server. ([Source](https://github.com/igniterealtime/Openfire)) `Apache``Java`
* [Prosody IM](http://prosody.im/) - Feature-rich and easy to configure XMPP server. ([Source](http://hg.prosody.im/)) `MIT``Lua`
* [Tigase](http://www.tigase.net/content/tigase-xmpp-server) - XMPP server implementation in Java. `Java`
#### XMPP Web Clients
* [Candy](http://candy-chat.github.io/candy/) - Multi user XMPP client written in Javascript. ([Source](https://github.com/candy-chat/candy)) `MIT``JavaScript`
* [Converse.js](https://conversejs.org/) - A free and open-source XMPP chat client in your browser ([Source](https://github.com/jcbrand/converse.js)) `MPLv2``Javascript`
* [Kaiwa](http://getkaiwa.com/) - Web based chat client in the style of common paid alternatives. ([Source Code](https://github.com/digicoop/kaiwa)) `MIT``Javascript, NodeJS`
* [Kontalk](http://kontalk.org/) – Kontalk is an Open Source Messenger, similiar to WhatsApp (app for android only currently), including end-to-end encryption, server is based on Tigase XMPP Server - ([Source Code](https://github.com/kontalk)) `GPLv3`
* [Salut à Toi](http://www.salut-a-toi.org/) - Multipurpose, multi frontend, libre and decentralised communication tool. ([Source Code](http://repos.goffi.org/sat)) `AGPLv3``Python`
* [Libervia](http://wiki.goffi.org/wiki/Libervia/en) - Web frontend from Salut à Toi ([Source Code](http://repos.goffi.org/libervia)) `AGPLv3``Python`
## Content Management Systems (CMS)
CMS are a practical way to setup a website with many features. CMS often come with third party plugins, themes and functionality that is easy to add and customize to your needs. See also [Blogging Platforms](#blogging-platforms) and [Static Site Generators](#static-site-generators)
Kovah
9 years ago