Best Open Source Pencil Alternatives

Versatile design and prototyping platform for teams. Create, collaborate, and bring your ideas to life with powerful vector editing tools.

Free open-source vector editor with nondestructive node-based workflow. Create graphics procedurally with infinite scalability. Runs in browser, exports SVG/PNG/JPG.

Native .fig file support, built-in AI with 90 tools, headless CLI, Vue SDK for custom editors, real-time P2P collaboration. MIT licensed, works offline.

Quant-UX is an open-source tool for creating interactive prototypes, conducting user tests, and analyzing results to improve UX design.

An open-source design platform featuring a customizable canvas editor, AI-powered tools, and React components for building modern web applications.