head to head · open source
uBlock vs percy
uBlock has 67,956 GitHub stars, 4,356 forks, 15 open issues and last shipped yesterday. percy has 2,315 stars, 84 forks, 44 open issues and last shipped 25 days ago. uBlock leads on adoption by 2,835% (67,956 vs 2,315 stars). uBlock is written in JavaScript under GPL-3.0; percy is written in Rust under Apache-2.0. uBlock has attracted 6% as many forks as stars, percy 4%. uBlock 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
| uBlock | percy | |
|---|---|---|
| GitHub stars | ★ 68K | ★ 2.3K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | JavaScript | Rust |
| Last push | 2026-09-18 | 2026-08-25 |
| Forks | ⑂ 4.4K | ⑂ 84 |
| 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 percy if
- You want the percy feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Rust
- You evaluated both and percy 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 percy
Percy is a Rust library and build workflow for creating frontend browser applications that compile to WebAssembly, with support for server side rendering, aimed at Rust developers who want to write client side, server side, or isomorphic web apps without leaving Rust.
read the full percy overview →
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Frequently asked questions
Is uBlock or percy more popular?
uBlock has 67,956 GitHub stars and percy has 2,315. uBlock has the larger community by that measure.
Are uBlock and percy free?
Both are open source. uBlock is licensed under GPL-3.0 and percy under Apache-2.0. Neither carries a licence fee.
What is the difference between uBlock and percy?
uBlock is written in JavaScript and percy in Rust. 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 percy?
Choose uBlock if you want the larger community (67,956 stars) or its GPL-3.0 licence terms. Choose percy if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.