Open Source Alternatives
macOS-native design tool for UI/UX.
Sketch is a trademark of its respective owner.
Updated May 2026
Sketch's lock-in is moderate. The .sketch file format is actually a documented ZIP of JSON and assets, making it one of the more portable design formats. Plugins exist to convert Sketch files to other formats. Solo designers can switch in a day. Teams with large Sketch Libraries and cross-file component references should budget a week to rebuild the design system. The hidden cost is the plugin ecosystem: if your workflow depends on specific Sketch plugins (Craft, Anima, Abstract), you need equivalents in the new tool.
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