This Unity editor extension allows exporting a Mecanim animations for 2D sprites as keyframe animations (spritesheets).

The plugin allows you to control the number of frames, size of each frame and dimensions of a spritesheet. It is possible to export animations as series of separate files as well as a single spritesheet.

By using this plugin you can improve efficiency by eliminating costly curve-based computations. You can also use your Unity animations with external tools.

All the spritesheet images in the preview were generated from Unity using this plugin.