LanguageTool
Open source grammar, style, and spell checker that protects your privacy
LanguageTool is an open source proofreading software that can help you write better while keeping your text private. Key features include:
- Support for over 25 languages
- Self-hostable to maintain complete privacy
- No need to send text to external servers
- Finds errors that basic spell checkers miss
- Integration with office suites and email clients
- Works offline when self-hosted
- Free and open source (LGPL 2.1)
- Available as browser extensions, desktop apps, and server software