Draw pixel sprites and animate them frame by frame.
Free MIT app · desktop & browser · Steam edition is optional

Design & creative
Draw pixel art and animated sprites with layers and onion skinning.
Draw pixel art and animated sprites with layers and onion skinning.
Draw pixel art and animated sprites with layers and onion skinning. See limitations before switching.
An older Aseprite fork, not every current Aseprite feature. Aseprite also permits free source builds; this replaces its paid ready-made route.
Each comparison covers the workflow described above, rather than every paid feature.