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 universal P2P file sharing client for Windows
You can message and share files inside your intranet without a server.
Simply explore your Android phone!
Document Management System and Content Management System
A Windows client for the Direct Connect networks
A multi-protocol & multi-source, cross platform download utility
Standalone chat system developed in php, mysql and javascript
Program for filesharing using Direct Connect and ADC protocols
Simple, web-based address & phone book
Refined P2P Filesharing + BitTorrent
Fully customizable web chat created using AJAX.
Authoring and Learning management system
Diverse P2P Filesharing
Allow to redirect (a.k.a. "remail") mail messages to other recipients
The leading Open Source survey tool