Chess engines that support the UCI or XBoard protocol.
Chess engines in APK format that provide the OEX format.
javascript chess games viewer for websites, blogs and live broadcasts
Blind Chess using Taiwan rule
The forever free, ad-free and open source chess server
A JavaScript game library to quickly develop board games for the web
Next generation web chess club
simple chess app
LGPL jquery plugin for desqchess
Chat Messenger - Open Source Social Network - Online Chess Game