LibreSprite
8.0#1 in pixel art softwareFree planFree planAndroidWebAPILinux
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| Fact | LibreSprite | Motestack |
|---|---|---|
| Animation | It includes real-time animation previews and onion skinning. | Its animation system includes multi-frame projects, a timeline, named animations, frame tags, onion skin, and frame interpolation. |
LibreSprite suits people making 2D sprites and animations who want layer, frame, palette and pixel-drawing tools. It runs on Windows, macOS, Linux and Android.
You want what its maker publishes above — check its page for the details.