Compare software

HyperWriteLightkey
Freemium

Free to start, with paid plans for more use.

 Freemium

Pricing details are not given in the research; check the website for current editions.

Web, Browser extension Windows
  • Autocomplete suggestions inside Gmail and other sites
  • Research with citations from scholarly sources
  • Inline word and phrase prediction in any Windows desktop application
  • Combines text prediction with spelling correction
  • Extension is Chrome only
  • Text is processed by a cloud service
  • Windows only
  • Little public detail on how predictions are produced
Web application, Browser extension Downloadable app
Closed source Closed source
License not stated License not stated
Account needed Not stated if an account is needed
Needs internet 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.