head to head · open source
uBlock vs LanguageTool
uBlock has 67,923 GitHub stars, 4,353 forks, 15 open issues and last shipped yesterday. LanguageTool has 15,042 stars, 1,581 forks, 2,148 open issues and last shipped yesterday. uBlock leads on adoption by 352% (67,923 vs 15,042 stars). uBlock is written in JavaScript under GPL-3.0; LanguageTool is written in Java under LGPL-2.1. uBlock has attracted 6% as many forks as stars, LanguageTool 11%. 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 | LanguageTool | |
|---|---|---|
| GitHub stars | ★ 68K | ★ 15K |
| License | GPL-3.0 | LGPL-2.1 |
| Written in | JavaScript | Java |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 4.4K | ⑂ 1.6K |
| 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 LanguageTool if
- You want the LanguageTool feature set and don't need the biggest community
- You prefer the LGPL-2.1 license terms
- Your stack matches Java
- You evaluated both and LanguageTool 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 LanguageTool
LanguageTool is open source proofreading software for English, Spanish, French, German, Portuguese, Polish, Dutch, and more than 20 other languages. Its tagline describes it as an AI powered grammar checker for 30+ languages, while the repository description calls it a style and grammar checker for 25+ languages. The project lives in the natural language processing and productivity ecosystem, where it helps writers, editors, and applications detect errors that a simple spell checker cannot find.
read the full LanguageTool overview →
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Frequently asked questions
Is uBlock or LanguageTool more popular?
uBlock has 67,923 GitHub stars and LanguageTool has 15,042. uBlock has the larger community by that measure.
Are uBlock and LanguageTool free?
Both are open source. uBlock is licensed under GPL-3.0 and LanguageTool under LGPL-2.1. Neither carries a licence fee.
What is the difference between uBlock and LanguageTool?
uBlock is written in JavaScript and LanguageTool in Java. 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 LanguageTool?
Choose uBlock if you want the larger community (67,923 stars) or its GPL-3.0 licence terms. Choose LanguageTool if its feature set, stack or LGPL-2.1 licence fits better. Both are self-hostable.