Homepage: Lunacy – Free Design Software for Win, Mac, Linux
License: Proprietary (No cost)
Upstream has been contacted: Yes, via Twitter. https://twitter.com/garrett/status/1491795015395254281
Lunacy is a no cost design tool available on Windows, Mac, and Linux. It can import Sketch and AI files.
Unfortunately, it’s only available as a Deb and Snap right now. I’ve contacted the team via Twitter to ask if they wouldn’t mind an unoffical repack of the deb or snap on Flathub, or if they wouldn’t mind packaging it as a Flatpak themselves.