head to head · open source
uBlock vs SingleFile
uBlock has 67,923 GitHub stars, 4,353 forks, 15 open issues and last shipped yesterday. SingleFile has 22,411 stars, 1,410 forks, 101 open issues and last shipped yesterday. uBlock leads on adoption by 203% (67,923 vs 22,411 stars). uBlock is written in JavaScript under GPL-3.0; SingleFile is written in JavaScript under AGPL-3.0. uBlock has attracted 6% as many forks as stars, SingleFile 6%. uBlock was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (firefox), 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 | SingleFile | |
|---|---|---|
| GitHub stars | ★ 68K | ★ 22K |
| License | GPL-3.0 | AGPL-3.0 |
| Written in | JavaScript | JavaScript |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 4.4K | ⑂ 1.4K |
| 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 SingleFile if
- You want the SingleFile feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and SingleFile 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 SingleFile
SingleFile is a web extension, and also a command line tool, that saves a complete web page into a single HTML file. It is written in JavaScript and released under the AGPL 3.0 license, and it lives in the browser extension ecosystem, with builds published for Chrome, Firefox (desktop and mobile), Microsoft Edge, Safari, Vivaldi, Brave, Waterfox, Yandex browser, and Opera. The project has been developed for roughly sixteen years and is distributed through the extension stores of Firefox, Chrome, Safari, and Microsoft Edge, as well as through manual installation from the project archive.
read the full SingleFile overview →
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Frequently asked questions
Is uBlock or SingleFile more popular?
uBlock has 67,923 GitHub stars and SingleFile has 22,411. uBlock has the larger community by that measure.
Are uBlock and SingleFile free?
Both are open source. uBlock is licensed under GPL-3.0 and SingleFile under AGPL-3.0. Neither carries a licence fee.
What is the difference between uBlock and SingleFile?
uBlock is written in JavaScript and SingleFile 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 SingleFile?
Choose uBlock if you want the larger community (67,923 stars) or its GPL-3.0 licence terms. Choose SingleFile if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.