Design tools · Free
OpenPencil
Open-source Figma-compatible design editor that runs fully local.

A design editor that opens native .fig files, runs in the browser or as a ~7 MB desktop app, and never sends files anywhere. Auto layout, components, variables, P2P collaboration, and a programmable engine with CLI and MCP for agents. MIT.
On the site
- Native Figma file support with round-trip fidelity
- Local-first editor plus headless CLI and MCP server
- Free and open source