head to head · open source
uBlock vs mocha
uBlock has 67,923 GitHub stars, 4,353 forks, 15 open issues and last shipped yesterday. mocha has 22,894 stars, 3,151 forks, 222 open issues and last shipped yesterday. uBlock leads on adoption by 197% (67,923 vs 22,894 stars). uBlock is written in JavaScript under GPL-3.0; mocha is written in JavaScript under MIT. uBlock has attracted 6% as many forks as stars, mocha 14%. uBlock was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (javascript), 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
| uBlock | mocha | |
|---|---|---|
| GitHub stars | ★ 68K | ★ 23K |
| License | GPL-3.0 | MIT |
| Written in | JavaScript | JavaScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 4.4K | ⑂ 3.2K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick uBlock if
- You weight community size — 68K stars and counting
- You want the GPL-3.0 license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick mocha if
- You want the mocha feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and mocha fits your workflow better
About uBlock
uBlock Origin is a CPU and memory efficient, wide spectrum content blocker for Chromium and Firefox, aimed at anyone who wants ads, trackers, coin miners, popups, anti blockers and malware sites neutralised by default without hand tuning anything.
read the full uBlock overview →
About mocha
Mocha is a classic, reliable and trusted test framework for Node.js and the browser, distributed as an open source JavaScript module under the MIT licence and aimed at JavaScript developers and package maintainers who need to write and run automated tests inside a Node.js process or in a browser environment.
read the full mocha overview →
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Frequently asked questions
Is uBlock or mocha more popular?
uBlock has 67,923 GitHub stars and mocha has 22,894. uBlock has the larger community by that measure.
Are uBlock and mocha free?
Both are open source. uBlock is licensed under GPL-3.0 and mocha under MIT. Neither carries a licence fee.
What is the difference between uBlock and mocha?
uBlock is written in JavaScript and mocha 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, uBlock or mocha?
Choose uBlock if you want the larger community (67,923 stars) or its GPL-3.0 licence terms. Choose mocha if its feature set, stack or MIT licence fits better. Both are self-hostable.