OSS Discovery

DE
Germany
AI & MACHINE LEARNING
SELF-HOSTABLE
ACTIVELY MAINTAINED
FREE
LanguageTool

LANGUAGETOOL

"Unlock precise writing with LanguageTool, an AI-driven proofreading tool for 30+ languages. Elevate your text with enhanced grammar, punctuation, and style checks. Ideal for professionals and individuals, it offers advanced features, including paraphrasing and style guides, across browser extensions, desktop apps, and API integrations."

GITHUB STARS
14k
+12% this month
FORKS
1.5k
Active community
LAST PUSH
Apr 24, 2026
High momentum
WATCHERS
157
Tracking updates
LICENSE
LGPL-2.1
Commercial use
"Unlock precise writing with LanguageTool, an AI-driven proofreading tool for 30+ languages. Elevate your text with enhanced grammar, punctuation, and style checks. Ideal for professionals and individuals, it offers advanced features, including paraphrasing and style guides, across browser extensions, desktop apps, and API integrations."

High Performance

Built for speed and minimal overhead.

Self-hostable

Docker, Kubernetes, or bare metal

Developer Native

Programmable via any language workflow

SUPPORTED LANGUAGES

Java
Java
HTML
HTML
Python
Python
Shell
Shell
Perl
Perl
Awk
Awk
XSLT
XSLT
CSS
CSS
Batchfile
Batchfile
Lex
Lex
Gnuplot
Gnuplot

VISUAL INTERFACE

Screenshot 1
Screenshot 2
Screenshot 3

The Quick Glance

Status
Active
Category
AI & Machine Learning
Pricing
Free
Self-Hosted
Yes
Available on
Windows
macOS
Linux
Latest Release
v6.7
Oct 10, 2025

Relative Standing — across 1,284 tools

STARS14k
Top 27% globally
FORKS1.5k
Top 25% in Open Source
ACTIVITYHigh
Top 37% Activity
WATCHERS157
Top 24% Community