SpriteHelper is a sprite packer, with advance resampling algorithms and multiple image formats, its a physics editor that have support for concave and convex shapes, auto tracing, multiple shapes per sprite and advance collision detection like the ability to figure out via code if you have collided with the head or the torso of a character. Finally its an animations editor that gives features such as time per frame, user data per frame and via code, notifications like "animation has ended", "animation has completed all repetitions", "animation has reached frame".
SpriteHelper also comes bundled with an API that makes loading a sprite or an animation together with its physical representation a one line of code job.
Support for engines:
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