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Aseprite vs mtPaint: catalog facts
Aseprite	mtPaint
Paid Paid license, with a free trial version.	Free Free and open source under the GPL-3.0.
Windows, macOS, Linux	Windows, Linux
Tools made specifically for pixel art, such as pixel-perfect strokes and RotSprite Frame tags, onion skin and multiple playback modes for animation	Edits indexed palette and 24-bit RGB images Layers, channels and animation support
Paid software, with only a trial for free Focused on pixel art, not general photo editing	Basic tools compared with full photo editors No release binaries published on the GitHub repository
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-3.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.