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@@ -216,6 +216,7 @@ Some [Groupware](#groupware) solutions also feature calendar/address book editin * [Niltalk](http://niltalk.com/) - A simple, private, persistence-free web based multi-room chat server + client. ([Source Code](https://github.com/knadh/niltalk)) `AGPLv3` `Go` * [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` `ะก++` + * [Ring](https://ring.cx/) - Free software for universal communication which respects freedoms and privacy of its users. ([Source Code](https://github.com/savoirfairelinux/ring-project)) `GPLv3` `C++` * [Rocket.Chat](https://rocket.chat/) - Teamchat solution similar to Gitter.im or Slack. ([Source Code](https://github.com/RocketChat/Rocket.Chat)) `MIT` `Nodejs` * [Scrollback](https://scrollback.io/) - Embeddable cross-platform chat for communities. ([Source Code](https://github.com/scrollback/scrollback)) `AGPLv3` `Nodejs` * [Spreed](https://www.spreed.me/) - WebRTC audio/video calls, conferencing server, and web client. ([Source Code](https://github.com/strukturag/spreed-webrtc)) `AGPLv3` `Go` |