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RocketChat - The ultimate open source web chat platform
Rocket.Chat is a Web Chat Server, developed in JavaScript, using the Meteor fullstack framework. It is a great solution for communities and companies wanting to privately host their own chat service or for developers looking forward to build and evolve their own chat platforms. Its features include File sharing, Video conferencing, Screen sharing, Live chat, Link preview and lot more.
chat chat-server screen-sharing video-conference slack-alternativeejabberd - Robust, Scalable and Extensible XMPP Server
ejabberd is a distributed, fault-tolerant technology that allows the creation of large-scale instant messaging applications. The server can reliably support thousands of simultaneous users on a single node and has been designed to provide exceptional standards of fault tolerance. As an open source technology, based on industry-standards, ejabberd can be used to build bespoke solutions very cost effectively.
xmpp jabber messaging-server im chat chat-server distributed real-timeMattermost - Self-hosted Team Communication Service
Mattermost is self-hosted team communication service bringing messaging and file sharing into one place, accessible across PCs and phones, with archiving and search.
chat chat-server slack-alternative collaboration communication messagingMumble - High Quality Voice Chat Software
Mumble is a cross-platform voice over IP application. It is a client - server application where multiple users could use the same server and all their communication is encrypted. It could be used while gaming. It does audio video recording.
voip skype-alternative internet-phone chat voip-server chat-server softphone0fc - End-to-end discreet web chat with strong cryptography
0fc enables you to run a secure in-browser group chat with isolated chatrooms. Server is considered minimal trusted zone, all important operations happen on client side. Ephemeral keys used to protect chat room traffic are generated within room owner's browser and propagated to the rest. It is built on top of built on top of Themis crypto library.
chat chat-server secure-chat web-chat instant-messagingFriends - P2P chat powered by the web
Friends is like Slack except P2P, offline friendly and open source. Data is transmitted over secure channels and messages are authenticated. It is made by a group of open source developers who are motivated to make a public chat platform that is easy to use but isn't centrally controlled, and where data is owned by its users.
chat communication irc p2p slack-alternative team-chat chat-server self-hosted webrtc