head to head · open source
uBlock vs BrowserOS
uBlock has 69,033 GitHub stars, 4,427 forks, 15 open issues and last shipped yesterday. BrowserOS has 14,225 stars, 1,525 forks, 82 open issues and last shipped yesterday. uBlock leads on adoption by 385% (69,033 vs 14,225 stars). uBlock is written in JavaScript under GPL-3.0; BrowserOS is written in TypeScript under AGPL-3.0. uBlock has attracted 6% as many forks as stars, BrowserOS 11%. uBlock was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (chromium), 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 | BrowserOS | |
|---|---|---|
| GitHub stars | ★ 69K | ★ 14K |
| License | GPL-3.0 | AGPL-3.0 |
| Written in | JavaScript | TypeScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 4.4K | ⑂ 1.5K |
| 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 BrowserOS if
- You want the BrowserOS feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches TypeScript
- You evaluated both and BrowserOS 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 BrowserOS
Website · Docs · Enterprise Free · Open source · Everything runs on your machine A second browser, just for your AI agents. Import your logins from Chrome in one click, connect Claude Code, Codex, or any MCP agent, and hand off your web tasks. Agents run in parallel in their own tabs. You watch live, or replay any session like a video. BrowserOS neo is not a Chrome replacement. It is a secondary browser that sits next to Chrome, made friendly to agents. Get started 1. Install BrowserOS neo Prefer a direct download? Grab it for macOS or Windows. 2. Import from Chrome One click brings over your logins, bookmarks…
read the full BrowserOS overview →
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Frequently asked questions
Is uBlock or BrowserOS more popular?
uBlock has 69,033 GitHub stars and BrowserOS has 14,225. uBlock has the larger community by that measure.
Are uBlock and BrowserOS free?
Both are open source. uBlock is licensed under GPL-3.0 and BrowserOS under AGPL-3.0. Neither carries a licence fee.
What is the difference between uBlock and BrowserOS?
uBlock is written in JavaScript and BrowserOS in TypeScript. 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 BrowserOS?
Choose uBlock if you want the larger community (69,033 stars) or its GPL-3.0 licence terms. Choose BrowserOS if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.