Compare software

ProWritingAidGrammarly for Microsoft Edge
Freemium

Free to start, with a paid version that unlocks the full toolkit.

 Freemium

The extension is free to install, with paid Grammarly plans for more features.

Web, Browser extension Browser extension
  • Style and line-editing feedback beyond basic grammar
  • Story planning and critique tools for fiction
  • Checks grammar and spelling directly in web pages
  • AI suggestions for rewriting and drafting text
  • Full feature set requires a paid plan
  • Geared toward fiction, less so toward other writing
  • Text is processed by Grammarly's online service
  • Only covers writing done inside the browser
Downloadable app, Web application, Browser extension Browser extension
Closed source Closed source
License not stated License not stated
Account needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 23, 2026

Checked October 1, 2026

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