Open-source grammar, style, and spell checking in 30+ languages.
LanguageTool has become a go-to for teams that want open-source grammar, style, and spell checking in 30+ languages. Whether you're evaluating it for the first time or comparing alternatives, here's the honest breakdown from hands-on testing.
Who it's for: 10M+ users who need reliable, well-supported software without building it themselves.
Catches grammar and style errors across 30+ languages, not just English.
Suggests clearer, more concise alternatives to wordy sentences.
Run the server on your own hardware for maximum data control.
Browser, Office, Google Docs, and editor plugins.
LanguageTool earns its place in a modern stack. The Free entry point is reasonable for what you get, and the Free (basic checks) means you can test it risk-free. If it fits your workflow, it'll pay for itself quickly.