Telegram Desktop messaging app
Mumble is an open-source, low-latency, high quality voice chat
Feature rich WhatsApp Client for Desktop Linux
The Discord music status that works with any media player
64Gram (unofficial Telegram Desktop)
An alternative Discord client with voice support made with C++ and GTK
Chat client for Twitch
A Discord Bot to protect your server from spam, invitations
You can message and share files inside your intranet without a server.
A Windows client for the Direct Connect networks
Psi+ Project — development branch of Psi XMPP client
Development toolkit for Web Services and XML data bindings for C & C++
rabbit instant messaging
A SSH based chatroom.
Your own private chat server. No coding. Ready in minutes.
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
Anope hybrid services for use on the Karma-Irc network.
Program for filesharing using Direct Connect and ADC protocols