head to head · open source
quasar vs buster
quasar has 27,207 GitHub stars, 3,668 forks, 74 open issues and last shipped 17 days ago. buster has 9,363 stars, 697 forks, 50 open issues and last shipped 4 months ago. quasar leads on adoption by 191% (27,207 vs 9,363 stars). quasar is written in JavaScript under MIT; buster is written in JavaScript under GPL-3.0. quasar has attracted 13% as many forks as stars, buster 7%. quasar was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (browser-extension), so they are genuine substitutes rather than adjacent tools.
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
| quasar | buster | |
|---|---|---|
| GitHub stars | ★ 27K | ★ 9.4K |
| License | MIT | GPL-3.0 |
| Written in | JavaScript | JavaScript |
| Last push | 2026-10-19 | 2026-06-27 |
| Forks | ⑂ 3.7K | ⑂ 697 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick quasar if
- You weight community size — 27K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick buster if
- You want the buster feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and buster fits your workflow better
About quasar
Quasar Framework Build high performance Vue.js user interfaces in record time: responsive Single Page Apps, SSR Apps, SSG Apps, PWAs, browser extensions, hybrid mobile apps and Electron apps. If you want, all using the same codebase! Please submit a PR to with your website/app/Quasar tutorial/video etc. Thank you! Supporting Quasar Quasar Framework is an MIT licensed open source project. Its ongoing development is made possible thanks to the support by our awesome sponsors and backers. Please consider supporting our efforts, too! If you use Quasar at work, drop a message to your management about sponsoring us at…
read the full quasar overview →
About buster
Buster: Captcha Solver for Humans Sponsors Lenso.ai Explore billions of images from all around the web. Search for places, people, duplicates, and more. Supporting the Project The continued development of Buster is made possible thanks to the support of awesome backers. If you'd like to join them, please consider contributing with Patreon, PayPal or Bitcoin. Description Buster is a browser extension which helps you to solve difficult CAPTCHAs by completing reCAPTCHA audio challenges using speech recognition. Challenges are solved by clicking on the extension button at the bottom of the reCAPTCHA widget…
read the full buster overview →
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Frequently asked questions
Is quasar or buster more popular?
quasar has 27,207 GitHub stars and buster has 9,363. quasar has the larger community by that measure.
Are quasar and buster free?
Both are open source. quasar is licensed under MIT and buster under GPL-3.0. Neither carries a licence fee.
What is the difference between quasar and buster?
quasar is written in JavaScript and buster in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, quasar or buster?
Choose quasar if you want the larger community (27,207 stars) or its MIT licence terms. Choose buster if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.