Cocos2d for iOS and OS X, built using Objective-C
A Flash Molehill (Stage3D) GPU accelerated 2D game engine
Create symmetric sprites: browse, save to PC, or store online
Library to create and manage sprites
Split and Rejoin sprite sheets.
A set of library for C++ and a programming language
Helper for the DDS file format
Game View Complex Example
RPG old-school Dragon Quest-like sur un thème parodique
For the handling and manipulation of the HTML5 <canvas> element
A free, open-source texture packing program.
A fighting game demo+source
A free ActionScript 3 library designed for developing 2D Flash games
First experiment with OpenGL - a simple car racing game
2D - 3D game engine
Stylesheet authoring framework
A cross platform utility for packing images onto a single sprite sheet
Sprite Font Creator
GameWizzard is a Sprite editor.
Zoë is an open source tool for generating spritesheet images