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.
A free and reliable P2P BitTorrent client
WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
A free peer-to-peer (P2P) file sharing client
An extremely powerful and configurable BitTorrent client
You can message and share files inside your intranet without a server.
A universal P2P file sharing client for Windows
A Windows client for the Direct Connect networks
Document Management System and Content Management System
Qt based GUI tool designed to create and edit .torrent files
An intranet chat application that does not require a server.
Unified Communications Server
Search, Download, Play, Share on Bittorrent and the cloud
A free peer-to-peer (P2P) BitTorrent file sharing client
Low-latency, high quality voice chat for gamers
A multi-protocol & multi-source, cross platform download utility
forma.lms is a Learning Management System (LMS), opensource lms
for Adium, Pidgin, Miranda and Telepathy IM Framework
A GTK+ Gnutella client, optimized for speed and scalability
Program for filesharing using Direct Connect and ADC protocols
[WARNING] Project has moved to http://github.com/Retroshare/Retroshare