Browse free open source Chat software and projects for Mac below. Use the toggles on the left to filter open source Chat software by OS, license, language, programming language, and project status.
A universal instant messaging (IM) program
An intranet chat application that does not require a server.
Psi IM — Qt-based XMPP client
Psi+ Project — development branch of Psi XMPP client
Low-latency, high quality voice chat for gamers
The Leading Open Source Communication Hub | Community Version
Standalone chat system developed in php, mysql and javascript
Program for filesharing using Direct Connect and ADC protocols
A multi-protocol instant messaging app for Mac OS X
Fully customizable web chat created using AJAX.
Open-source social network CMS and mobile apps.
The IRC's Talking Robot
PHP & MySQL based CMS with messenger
Chat Messenger. E-Mail-Client. Websearch. Filetransfer.