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.
The Leading Open Source Communication Hub | Community Version
A free course management system (CMS) to create online learning sites
Psi+ Project — development branch of Psi XMPP client
WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
A universal instant messaging (IM) program
A free and reliable P2P BitTorrent client
Mail Notifer for Windows
Search, Download, Play, Share on Bittorrent and the cloud
php forum, php forum script, forum software, bbs - by XMB Forum
forma.lms is a Learning Management System (LMS), opensource lms
Free and open source Q&A platform software for all the teams.
Fully customizable web chat created using AJAX.
You can message and share files inside your intranet without a server.
Powerful Open Source Email Marketing app with analytics & segmentation
A GTK+ Gnutella client, optimized for speed and scalability
RSS feed reader
A universal P2P file sharing client for Windows
Free and open source webmail software