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Grammarly vs Writing Tools: catalog facts
Grammarly	Writing Tools
Freemium Free to sign up, with paid plans for more features.	Free Free and open source; cloud model providers may charge separately.
Web, Browser extension	Windows, macOS, Linux
Grammar, spelling and clarity checks as you type One-click paragraph rewrites and tone suggestions	Works on selected text in any application Supports local LLMs as well as cloud APIs
Requires an account Text is processed on Grammarly's servers	Needs an API key or a local model set up Output quality depends on the chosen model
Hosted service, Browser extension	Downloadable app
Closed source	Open source
License not stated	License not stated
Account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 26, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.