What it does
Grammalecte checks French grammar and typography, with a text formatter, configurable error categories and spelling dictionaries.
Choose the French dictionary variant and the host application before installing Grammalecte. Its current LibreOffice extension requires 6.4 or later; installing a different Grammalecte variant uses the same extension ID and overwrites the first. Restart the application, then use the grammar categories, text formatter or custom lexical dictionary as needed. Writer cannot use this checker and LanguageTool simultaneously for one language. The homepage also says its Chrome version is not compatible with the new extension API; Firefox, Thunderbird and Python routes have separate requirements.
Strengths
- Selectable French spelling conventions
- Text formatter and OCR-error checks
Watch out for
- Dedicated to French
Best for
- Preparing French text and typography
Sources
- Grammalecte (Oct 26, 2026)
- Grammalecte | Official project homepage (Oct 26, 2026)