head to head · open source
OpenPencil vs Quant-UX
OpenPencil has 9,551 GitHub stars, 1,004 forks, 46 open issues and last shipped yesterday. Quant-UX has 2,751 stars, 293 forks, 109 open issues and last shipped 23 days ago. OpenPencil leads on adoption by 247% (9,551 vs 2,751 stars). OpenPencil is written in TypeScript under MIT; Quant-UX is written in Vue under GPL-3.0. OpenPencil has attracted 11% 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 | ★ 9.6K | ★ 2.8K |
| License | MIT | GPL-3.0 |
| Written in | TypeScript | Vue |
| Last push | 2026-11-02 | 2026-10-11 |
| Forks | ⑂ 1.0K | ⑂ 293 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick OpenPencil if
- You weight community size — 9.6K 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 Open source design editor. Opens .fig and .pen design files, includes built in AI, and ships as a programmable toolkit with a headless Vue SDK for building custom editors. Status: Active development. Usable today, with some rough edges as features evolve. Try it online → · Download · Documentation · Roadmap · llms.txt Installation macOS (Homebrew): Or download from the releases page, or use the web app — no install needed. What it does Opens .fig and .pen files — read and write native Figma files, open supported Pencil documents from the app or OS file browser, copy & paste nodes between apps AI…
read the full OpenPencil overview →
About Quant-UX
Quant UX Prototype, Test and Learn Quant UX is a research, usability and prototyping tool to quickly test your designs and get data driven insights. This repo contains the front end. You can find a working demo at Development setup Prerequisite Running Locally on the Host Machine Compiles and hot reloads for development Compiles and minifies for production Run your unit tests Lints and fixes files Developing inside a Docker Container If you wish to develop by running the service exclusively through Docker, you can build a development image using: This will create a Docker Image tagged under quant ux . You can…
read the full Quant-UX overview →
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Frequently asked questions
Is OpenPencil or Quant-UX more popular?
OpenPencil has 9,551 GitHub stars and Quant-UX has 2,751. 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 (9,551 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.