AddonBench
LanguageTool
Multilingual grammar and style checker for teams writing in more than one language.
LanguageTool proofreads text in browser text fields across more than 30 languages, flagging grammar, punctuation, and style issues. It is built by LanguageTooler GmbH in Germany and is often chosen by European teams for its data handling and its self-hosting option. The free tier handles core checks, while Premium adds advanced style rules, longer text limits, and a custom style guide.
