You can make it - Open Source MMORPG Platform
ek- of wkvoetbalmanager
Online War system for IL-2 Sturmovik and Iron Front in ArmA 2
javascript chess games viewer for websites, blogs and live broadcasts
Teach your students how to figure out tricky texts in any language.
Playing Go with web-based turn-based Go server
Open source script based on Master XLS
AutoTeach makes kids study and learn in exchange for internet access.
Modular Gaming Open Source Persistent Browser Based Game Framework
XMICAE is a framework for browser-based IF/RPG narratives.
web cms for clans and esport related pages
Mission Impossible C64 game remake in HTML5
SuperWikia: The Runtime/Realtime Environment for Codesmiths
Web-Based Comic Collection Manager
Hra piškvorky - Game gomoku
A open-source online football manager like hattrick
Munchkin online game. We use: php,jquery,mysql