head to head · open source
uBlock vs LanguageTool
uBlock has 69,033 GitHub stars, 4,427 forks, 15 open issues and last shipped yesterday. LanguageTool has 15,229 stars, 1,598 forks, 2,148 open issues and last shipped yesterday. uBlock leads on adoption by 353% (69,033 vs 15,229 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 10%. 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 | ★ 69K | ★ 15K |
| License | GPL-3.0 | LGPL-2.1 |
| Written in | JavaScript | Java |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 4.4K | ⑂ 1.6K |
| 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 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
[![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 LanguageTool
LanguageTool LanguageTool is open source proofreading software for English, Spanish, French, German, Portuguese, Polish, Dutch, and more than 20 other languages. It finds many errors that a simple spell checker cannot detect. LanguageTool Forum How to run your own LanguageTool server HTTP API documentation How to use our public server via HTTP How to use LanguageTool from Java (Javadoc) For more information, please see our homepage, at languagetool.org , this README , and CHANGES . The LanguageTool core (this repo) is freely available under the LGPL 2.1 or later. Docker Try one of the following projects for a…
read the full LanguageTool overview →
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Frequently asked questions
Is uBlock or LanguageTool more popular?
uBlock has 69,033 GitHub stars and LanguageTool has 15,229. 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 (69,033 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.