An alternative Discord client with voice support made with C++ and GTK
Mumble is an open-source, low-latency, high quality voice chat
Feature rich WhatsApp Client for Desktop Linux
(Golang) Go bindings for Discord
The extensible chat client
A reference implementation of the SimpleX Messaging Protocol
Chat client for Twitch
Distributed instant messaging system for developers
A Discord Bot to protect your server from spam, invitations
A dynamic library tweak for WeChat macOS
A universal instant messaging (IM) program
Psi+ Project — development branch of Psi XMPP client
Development toolkit for Web Services and XML data bindings for C & C++
UFONet - Denial of Service Toolkit
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.
The Free & Popular FLARUM Web Software in a Complete Virtual Machine
Chat over SSH
Psi IM — Qt-based XMPP client
Unofficial discord client for the Nintendo Switch
IXSF Messenger is a java-based messenger
A cross platform NINJAM client with linear chain-streaming mode
Low-latency, high quality voice chat for gamers
An example of a simple chat system