Lunacy
Free desktop UI design that opens Sketch and Figma files.
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sovereigntyLunacy is a free desktop design app from Icons8 that reads and writes Sketch files and imports Figma documents, with built-in icons, illustrations and photos. It runs natively on Windows, macOS and Linux, and works offline — useful where a browser-based tool is not an option. It is proprietary and free rather than open source, which is why it scores where it does: you are not paying, but you are still depending on a company's decision to keep it free.
SOURCE-AVAILABLEProprietary (free)LOCAL-FIRST
LicenseProprietary (free)
PricingFree. Paid Icons8 subscription only for premium asset libraries.
Open sourceNo
Self-hostableNo
Local-first dataYes
What it does well
- +Genuinely free with no seat limit
- +Opens Sketch files natively and imports from Figma
- +Runs offline as a native desktop app on all three platforms
- +Built-in asset libraries save real time
Where it falls short
- −Proprietary — free today is a business decision, not a licence
- −No self-hosting and no source access
- −Collaboration is weaker than Figma or Penpot
- −Tied to Icons8's ecosystem and its commercial direction
Lunacy as an alternative to
Where Lunacy shows up in our comparisons, and how it ranked.
Lunacy head-to-head
Straight comparisons against the tools people weigh it against.