head to head · open source
fingerprintjs vs LanguageTool
fingerprintjs has 28,466 GitHub stars, 2,621 forks, 19 open issues and last shipped yesterday. LanguageTool has 15,042 stars, 1,581 forks, 2,148 open issues and last shipped yesterday. fingerprintjs leads on adoption by 89% (28,466 vs 15,042 stars). fingerprintjs is written in TypeScript under MIT; LanguageTool is written in Java under LGPL-2.1. fingerprintjs has attracted 9% as many forks as stars, LanguageTool 11%. fingerprintjs 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
| fingerprintjs | LanguageTool | |
|---|---|---|
| GitHub stars | ★ 28K | ★ 15K |
| License | MIT | LGPL-2.1 |
| Written in | TypeScript | Java |
| Last push | 2026-09-17 | 2026-09-17 |
| Forks | ⑂ 2.6K | ⑂ 1.6K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick fingerprintjs if
- You weight community size — 28K stars and counting
- You want the MIT license terms
- Your stack matches TypeScript
- 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 fingerprintjs
FingerprintJS is an open source, client side browser fingerprinting library that queries browser attributes and computes a hashed visitor identifier from them, aimed at web developers and engineering teams that need to recognise returning browsers without depending on cookies or local storage.
read the full fingerprintjs 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 fingerprintjs or LanguageTool more popular?
fingerprintjs has 28,466 GitHub stars and LanguageTool has 15,042. fingerprintjs has the larger community by that measure.
Are fingerprintjs and LanguageTool free?
Both are open source. fingerprintjs is licensed under MIT and LanguageTool under LGPL-2.1. Neither carries a licence fee.
What is the difference between fingerprintjs and LanguageTool?
fingerprintjs is written in TypeScript 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, fingerprintjs or LanguageTool?
Choose fingerprintjs if you want the larger community (28,466 stars) or its MIT licence terms. Choose LanguageTool if its feature set, stack or LGPL-2.1 licence fits better. Both are self-hostable.