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JS Paint vs Kleki: catalog facts
JS Paint	Kleki
Free Free and open source under the MIT License, with optional donations.	Free Free to use in the browser.
Linux, Web	Web
Faithful MS Paint interface in any browser Extra features beyond the original, including vertical text	Runs in the browser with nothing to install Opens straight into a drawing canvas
Deliberately simple compared with full photo editors No layers or advanced retouching tools	Browser only Fewer features than a desktop painting program
Downloadable app, Web application	Web application
Open source	Closed source
License: MIT	License not stated
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 24, 2026	Official website Full listing and sources Checked September 23, 2026

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