head to head · open source
uBlock vs percy
uBlock has 69,033 GitHub stars, 4,427 forks, 15 open issues and last shipped yesterday. percy has 2,315 stars, 84 forks, 44 open issues and last shipped 15 days ago. uBlock leads on adoption by 2,882% (69,033 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.
← all 20902 open source comparisons
Side by side
| uBlock | percy | |
|---|---|---|
| GitHub stars | ★ 69K | ★ 2.3K |
| License | GPL-3.0 | Apache-2.0 |
| Written in | JavaScript | Rust |
| Last push | 2026-11-02 | 2026-10-19 |
| Forks | ⑂ 4.4K | ⑂ 84 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick uBlock if
- You weight community size — 69K 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
[![Badge Commits]][Commit Rate] [![Badge Issues]][Issues] [![Badge Localization]][Crowdin] [![Badge License]][License] [![Badge NPM]][NPM] [![Badge Mozilla]][Mozilla] ![Badge Chrome] [![Badge Edge]][Edge] uBlock Origin (uBO) GitHub Releases Stable and development versions on Firefox, Chromium MV2, and Thunderbird. Must be placed manually into web browsers; the Chromium and Thunderbird versions usually won't auto update. Related: uBlock Origin Lite uBlock Origin (uBO) is a CPU and memory efficient [wide spectrum content blocker][Blocking] for Chromium and Firefox. It blocks ads, trackers, coin miners, popups…
read the full uBlock overview →
About percy
Percy ===== Build frontend browser apps with Rust + WebAssembly. Supports server side rendering. The Percy Book This README gives a light introduction to Percy. Check out [The Percy Book] for a full walk through. [The Percy Book]: Stable Rust Percy compiles on stable Rust with one caveat: On nightly Rust you can create text nodes without quotes. On stable Rust, quotation marks are required. This difference will go away once span locations are stabilized in the Rust compiler Rust tracking issue. Getting Started The best way to get up to speed is by checking out The Percy Book, but here is a very basic example to…
read the full percy overview →
More in Productivity & Utilities
Related comparisons
More Browsers & Extensions projects
Compare either of these against the rest of the Browsers & Extensions field.
Frequently asked questions
Is uBlock or percy more popular?
uBlock has 69,033 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 (69,033 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.