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KolourPaint vs mtPaint: catalog facts
KolourPaint	mtPaint
Free Free and open source from the KDE community.	Free Free and open source under the GPL-3.0.
macOS, Linux	Windows, Linux
Quick to start and easy to learn Covers basic shapes, text, selections and effects	Edits indexed palette and 24-bit RGB images Layers, channels and animation support
Not suited to advanced photo editing or layered work Primarily a Linux application	Basic tools compared with full photo editors No release binaries published on the GitHub repository
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account 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.