Lunacy

Proprietary but free core editor for UI layout, components, and prototyping. Strong Figma (.fig) import when the team is not on Figma seats. Not open source — compare against Penpot when license and self-host matter.

Official

Lunacy · Icons8

Dev-Centr docs

Web design tools comparison · Design · Penpot (open alternative)

Highlights

  • Desktop app (Windows, macOS, Linux)

  • Opens Figma files for view/edit in many nonprofit and volunteer workflows

  • Use for canvas work; ship the public site from your own code repo — not a bundled closed host (see Framer warning in the comparison page)