Browse free open source Communications software and projects for Linux 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
An extremely powerful and configurable BitTorrent client
You can message and share files inside your intranet without a server.
A fast cross-platform FTP client
Desktop Telegram client with good customization and Ghost mode.
A universal instant messaging (IM) program
Personal teleprompter software for all video makers.
A multi-protocol & multi-source, cross platform download utility
Psi IM — Qt-based XMPP client
Document Management System and Content Management System
Real time satellite tracking and orbit prediction
Psi+ Project — development branch of Psi XMPP client
Search, Download, Play, Share on Bittorrent and the cloud
An intranet chat application that does not require a server.
Unified Communications Server
Open Source Enterprise Content Management ECM
Qt based GUI tool designed to create and edit .torrent files
Low-latency, high quality voice chat for gamers
Program for filesharing using Direct Connect and ADC protocols
Remote assistance made easy!
Standalone chat system developed in php, mysql and javascript