GStars
    gorhill

    gorhill/uBlock

    uBlock Origin - An efficient blocker for Chromium and Firefox. Fast and lean.

    web
    blocker
    browser-extension
    chromium
    firefox
    javascript
    JavaScript
    GPL-3.0
    69.0K stars
    4.4K forks
    69.0K GitHub watchers
    Updated Nov 2, 2026
    View on GitHub

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    Where it stands

    Rank, growth pace and release cadence relative to everything GStars tracks.

    5 releases in the last 90 days, the latest today, with 110 contributors on GitHub.

    Peaked at #18 in the weekly ranking the week of Jan 18, its best in the past year.

    Use Cases & Benefits

    • Blocks ads, trackers, malware, and other unwanted content efficiently on Chromium and Firefox browsers.
    • Offers high CPU and memory efficiency with extensive filter list support and customizable blocking rules.
    • Use for enhancing privacy and security by blocking intrusive ads and trackers during web browsing.
    • Use for reducing page load times and bandwidth usage by preventing unwanted content from loading.
    • Use for enterprise deployment to centrally manage content blocking policies across multiple users.

    Should you depend on it?

    License terms, project hygiene and risks, from GitHub metadata and GStars' snapshots.

    License

    GPL 3.0

    Copyleft: distributing software that includes it generally requires releasing your source under the same license.

    Community files

    • README: present
    • Contributing guide: present

    Watch-outs

    • GPL-style copyleft: including it in distributed software generally requires releasing your source under the same license.

    General guidance from repository metadata, not legal advice. How we score

    From the README

    uBlock Origin (uBO) is a CPU and memory-efficient wide-spectrum content blocker for Chromium and Firefox. It blocks ads, trackers, coin miners, popups, annoying anti-blockers, malware sites, etc., by default using EasyList, EasyPrivacy, Peter Lowe's Blocklist, Online Malicious URL Blocklist, and uBO filter lists. There are many other lists available to block even more. Hosts files are also supported. uBO uses the EasyList filter syntax and extends the syntax to work with custom rules and filters.

    You may easily unselect any preselected filter lists if you think uBO blocks too much. For reference, Adblock Plus installs with only EasyList, ABP filters, and Acceptable Ads enabled by default.

    It is important to note that using a blocker is NOT theft. Do not fall for this creepy idea. The ultimate logical consequence of blocking = theft is the criminalization of the inalienable right to privacy.

    Excerpt from the gorhill/uBlock README on GitHub (GPL-3.0 license). © its authors.Read the full README on GitHub

    Daily snapshots

    Stars gained per day, and how forks and open issues moved, from GStars' daily snapshots

    Aug 19: +33Aug 20: +64Aug 27: +22Aug 28: +28Aug 29: +18Aug 30: +26Aug 31: +28Sep 1: +46Sep 2: +35Sep 3: +34Sep 4: +25Sep 5: +21Sep 6: +16Sep 7: +29Sep 8: +33Sep 9: +26Sep 10: +32Sep 11: +33Sep 12: +32Sep 13: +19Sep 14: +26Sep 15: +29Sep 16: +28Sep 17: +32Sep 18: +17

    +2,150 stars over 83 days across 31 snapshot days; best day +64 on Aug 20.

    Forks

    4.4K+152

    Open issues

    15-6

    Compared with peers in Web

    Fastest-growing repositories GStars tracks in this cohort for the week of Nov 8, by 7-day star growth

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