A New Kind of Instant Messaging
Mumble is an open-source, low-latency, high quality voice chat
The first messaging platform operating without user identifiers
An alternative Discord client with voice support made with C++ and GTK
A private messenger for iOS
A glossy Matrix collaboration client for the web
Private messenger for Windows, Mac, and Linux
A glossy Matrix collaboration client for Android
You can message and share files inside your intranet without a server.
Cerberus Content Management System
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
A beautiful SMS messenger for Android
Low-latency, high quality voice chat for gamers
A portable peer to peer voice-chat/walkie-talkie.
Darkbot is an AI robot for IRC, especially useful for help channels.
[WARNING] Project has moved to http://github.com/Retroshare/Retroshare
An IM App like WeChat App to send text, pictures, audio, video, etc.
A small (ish) messaging server for anything you can think of
Microsoft SMB protocol plugin for Miranda IM.
The IRC's Talking Robot
Up to date MUD client evolved from the original MudMaster
Chat Messenger - Open Source Social Network - Online Chess Game