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PaintTool SAI vs MyPaint: catalog facts
PaintTool SAI	MyPaint
Paid Paid license after a 31-day full-featured trial.	Free Free and open source under the GPL.
Windows	Windows, Linux
Smooth anti-aliased strokes suited to line art Full tablet pressure support	Infinite canvas with no fixed document size to plan around Extremely configurable brushes with full graphics tablet support
Windows only, and not supported in virtual machines No high-DPI monitor support	Last stable release was 2.0.1 in 2020; newer work is only in nightly builds Windows and Linux only in official builds; no macOS release
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
Not stated if an account is needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 21, 2026

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