Using Brave A.I. search engine via Mojeek gives:
"ONLYOFFICE provides several options for grammar and spell checking, ranging from built-in AI tools to third-party plugins. Since version 8.2, no grammar plugins are installed by default and must be added manually via the Plugin Manager or GitHub.
Primary Options
- ONLYOFFICE AI Plugin : The most integrated solution for recent versions (Docs 9.2+). It uses AI to provide real-time grammar, spelling, and style suggestions directly in the toolbar or context menu. This is the recommended tool for a seamless, native experience.
- LanguageTool Plugin : A popular, open-source multilingual checker supporting over 25 languages. It is compatible with self-hosted and desktop editors. Users must download the plugin from GitHub and install it manually. It checks for grammar, style, and spelling errors in a side panel.
- Grammalecte Plugin : Specifically designed for French text, this open-source plugin corrects grammar, typography, and punctuation. Like LanguageTool, it requires manual installation via the GitHub repository.
Installation Note
To use LanguageTool or Grammalecte, you must:
- Download the plugin ZIP from the respective GitHub repositories.
- Open the Plugins tab in ONLYOFFICE.
- Click the plugin icon to select the text and run the check.
- Apply corrections using the Replace button in the plugin panel.
For users seeking real-time, in-document feedback without manual plugin configuration, the ONLYOFFICE AI plugin is the current standard. For advanced multilingual or specific language needs (like French), LanguageTool and Grammalecte remain the primary third-party alternatives.
AI-generated answer. Please verify critical facts."