head to head · open source
OpenPencil vs Quant-UX
OpenPencil has 8,357 GitHub stars, 815 forks, 46 open issues and last shipped yesterday. Quant-UX has 2,714 stars, 287 forks, 109 open issues and last shipped 3 days ago. OpenPencil leads on adoption by 208% (8,357 vs 2,714 stars). OpenPencil is written in TypeScript under MIT; Quant-UX is written in Vue under GPL-3.0. OpenPencil has attracted 10% as many forks as stars, Quant-UX 11%. OpenPencil was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| OpenPencil | Quant-UX | |
|---|---|---|
| GitHub stars | ★ 8.4K | ★ 2.7K |
| License | MIT | GPL-3.0 |
| Written in | TypeScript | Vue |
| Last push | 2026-09-17 | 2026-09-15 |
| Forks | ⑂ 815 | ⑂ 287 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenPencil if
- You weight community size — 8.4K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick Quant-UX if
- You want the Quant-UX feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Vue
- You evaluated both and Quant-UX fits your workflow better
About OpenPencil
OpenPencil is an open source, AI native design editor that opens and writes native Figma .fig and Pencil .pen files, runs as a roughly 7 MB desktop app or in the browser, and is aimed at designers and developers who want a local, fully programmable alternative to Figma.
read the full OpenPencil overview →
About Quant-UX
Quant UX is open source research, usability, prototyping tool. It lives in Vue ecosystem, uses GPL 3.0 license, GitHub category Miscellaneous / Design & Prototyping. This repo contains front end. Working demo exists at quant ux.com. Project lets designers build prototypes, run tests, collect data, learn from results. GitHub metadata lists 2712 stars, 287 forks, 0 contributors, 109 open issues.
read the full Quant-UX overview →
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Frequently asked questions
Is OpenPencil or Quant-UX more popular?
OpenPencil has 8,357 GitHub stars and Quant-UX has 2,714. OpenPencil has the larger community by that measure.
Are OpenPencil and Quant-UX free?
Both are open source. OpenPencil is licensed under MIT and Quant-UX under GPL-3.0. Neither carries a licence fee.
What is the difference between OpenPencil and Quant-UX?
OpenPencil is written in TypeScript and Quant-UX in Vue. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, OpenPencil or Quant-UX?
Choose OpenPencil if you want the larger community (8,357 stars) or its MIT licence terms. Choose Quant-UX if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.