Bersirc is an open source IRC client that runs on Windows.
Witty Twitter, jongalloway
Witty is a free, open source Twitter client for Windows.
Kevin L. Papendick
MyClient is an open source web client interface for the MySQL database.
Craig P. Britt
Cantata is an open source graphical client for MPD.
Transmission-Qt is an open source Bittorent client.
the shift foundation
A free open source jabber client for GNOME program.
This is an installer for Metis, the Open Source RuneScape client.
Spark is an Open Source IM client optimized for businesses and organizations.
Mudlet is a modern open source MUD client for Windows OS.
Cutegram is an open source telegram client for Windows and other OS.