head to head · open source
serenity vs LanguageTool
serenity has 33,938 GitHub stars, 3,488 forks, 739 open issues and last shipped yesterday. LanguageTool has 15,229 stars, 1,598 forks, 2,148 open issues and last shipped yesterday. serenity leads on adoption by 123% (33,938 vs 15,229 stars). serenity is written in C++ under BSD-2-Clause; LanguageTool is written in Java under LGPL-2.1. serenity has attracted 10% as many forks as stars, LanguageTool 10%. LanguageTool 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
| serenity | LanguageTool | |
|---|---|---|
| GitHub stars | ★ 34K | ★ 15K |
| License | BSD-2-Clause | LGPL-2.1 |
| Written in | C++ | Java |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 3.5K | ⑂ 1.6K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick serenity if
- You weight community size — 34K stars and counting
- You want the BSD-2-Clause license terms
- Your stack matches C++
- 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 serenity
SerenityOS Graphical Unix like operating system for 64 bit x86, Arm, and RISC V computers. FAQ Documentation Build Instructions About SerenityOS is a love letter to '90s user interfaces with a custom Unix like core. It flatters with sincerity by stealing beautiful ideas from various other systems. Roughly speaking, the goal is a marriage between the aesthetic of late 1990s productivity software and the power user accessibility of late 2000s \ nix. This is a system by us, for us, based on the things we like. You can watch videos of the system being developed on YouTube: Andreas Kling's channel Linus Groh's…
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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 serenity or LanguageTool more popular?
serenity has 33,938 GitHub stars and LanguageTool has 15,229. serenity has the larger community by that measure.
Are serenity and LanguageTool free?
Both are open source. serenity is licensed under BSD-2-Clause and LanguageTool under LGPL-2.1. Neither carries a licence fee.
What is the difference between serenity and LanguageTool?
serenity is written in C++ 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, serenity or LanguageTool?
Choose serenity if you want the larger community (33,938 stars) or its BSD-2-Clause licence terms. Choose LanguageTool if its feature set, stack or LGPL-2.1 licence fits better. Both are self-hostable.