LibreSprite

LibreSprite lets you create 2D animations for videogames. From sprites, to pixel-art, retro style graphics, and whatever you like about the 8-bit (and 16-bit) era.

It offers the following features:

Real-time animation previews

Onion skinning

Multiple sprites can be edited at once

Ready to use palettes, or make your own

Sprites are composed of both layers & frames

Tiled drawing mode, useful to draw patterns and textures

Pixel precise tools like filled contour, polygon, shading mode, etc.

Several file types supported for your sprites and animations