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Writing Tools vs Linguix: catalog facts
Writing Tools	Linguix
Free Free and open source; cloud model providers may charge separately.	Freemium Free to start, with team features offered on top.
Windows, macOS, Linux	Web, Browser extension
Works on selected text in any application Supports local LLMs as well as cloud APIs	Works on websites across browsers through an extension Grammar and spell checking in seven languages with automatic detection
Needs an API key or a local model set up Output quality depends on the chosen model	Needs an account to use Text is processed by an online service
Downloadable app	Web application, Browser extension
Open source	Closed source
License not stated	License not stated
No account needed	Account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked September 26, 2026

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