3D game engine for C and C++
A 2D tile map editor created using .NET framework.
Sprite Font Creator
A truly extensible cross-platform game engine
3D world editor for game development
A very small multi-platform game engine for creating desktop games.
A lightweight HTML5 Game Engine
Little game background framework in java.
Game development toolkit
Simple and scalable 3d javascript game engine
UtiliGame is a light-weight game engine written in Java.
An open source skateboard games engine written in C# and .NET.
C-Lesh is a game programming language for 2D games.
Pear3DEngine is a modern and modular 3D development framework
Open Source Virtual World and MMOG Development Platform
An extensible development framework for roleplay games.
cross-platform 2d game engine
Java game engine for shoot 'em ups, using Java2D.