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Lunacy vs OpenPencil: catalog facts
Lunacy	OpenPencil
Freemium Free to use, with paid options listed on the pricing page.	Free Free and open source under the MIT licence.
Windows, macOS, Linux, Web	macOS, Web, Command line
Native Linux version, unlike most UI design tools Opens Sketch files and converts from Figma	Opens and round-trips Figma .fig files Headless CLI for exporting and analysing designs
Some features sit behind paid plans Closed source	Young project compared with established design tools Figma compatibility relies on a reverse-engineered file codec
Downloadable app, Web application	Downloadable app, Web application
Closed source	Open source
License not stated	License: MIT
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 October 1, 2026

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