Browse free open source Communications software and projects below. Use the toggles on the left to filter open source Communications software by OS, license, language, programming language, and project status.
WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
A free and reliable P2P BitTorrent client
A free peer-to-peer (P2P) file sharing client
An extremely powerful and configurable BitTorrent client
A universal P2P file sharing client for Windows
Document Management System and Content Management System
Simply explore your Android phone!
A universal instant messaging (IM) program
Psi IM — Qt-based XMPP client
Psi+ Project — development branch of Psi XMPP client
A multi-protocol & multi-source, cross platform download utility
Standalone chat system developed in php, mysql and javascript
The Leading Open Source Communication Hub | Community Version
Simple, web-based address & phone book
Refined P2P Filesharing + BitTorrent
A multi-protocol instant messaging app for Mac OS X
Open Source Learning Management System
Open Source Podcast Publishing Solution