Browse free open source Chat software and projects below. Use the toggles on the left to filter open source Chat software by OS, license, language, programming language, and project status.
You can message and share files inside your intranet without a server.
A Windows client for the Direct Connect networks
A universal instant messaging (IM) program
ArmCord is a custom client designed to enhance your Discord experience
An alternative Discord client with voice support made with C++ and GTK
Psi IM — Qt-based XMPP client
Telegram Desktop messaging app
An intranet chat application that does not require a server.
Development toolkit for Web Services and XML data bindings for C & C++
Psi+ Project — development branch of Psi XMPP client
A patched version of discord, with bot login support
Mattermost Desktop application for Windows, Mac and Linux
The FetLife App on Android
A free peer-to-peer (P2P) BitTorrent file sharing client
A smaller, faster, and easier IM client
The game engine for everyone
The first messaging platform operating without user identifiers
A reference implementation of the SimpleX Messaging Protocol
The pinnacle of file-sharing and chat - an innovative DC client!
Low-latency, high quality voice chat for gamers
Elegant Facebook Messenger desktop app
Tiny alternative Discord client with a smaller footprint and support
A hex editor for WeChat/QQ/TIM
WhatsApp library for NodeJS that connects through the browser app
Take control of your Discord experience with GoofCord