Arianne is an engine to develop multiplayer online games like Stendhal
Orx: Portable Game Engine
Game engine supporting many 3D/2D formats and graphic effects
JavaScript framework to build game engines, games, emulators and apps
Java Settlers
A complete web framework to create online Fighting Fantasy adventures
An environment to develop games based on a rectangular board
Asphyre is a cross-platform framework for Delphi and FreePascal.
Um pequeno framework didático de games em Java
Free strategy browsergame engine.
Cross platform Game Creation Software
AutoTeach makes kids study and learn in exchange for internet access.
Modular Gaming Open Source Persistent Browser Based Game Framework
Take the chess graphism, and use it with a chess engine.
A multiplatform game engine for interactive fiction experiences
UtiliGame is a light-weight game engine written in Java.
C-Lesh is a game programming language for 2D games.
A game engine in java for 2D strategy games