Compare software

HARPA AIMaxAI
Freemium

Free to install, with paid plans for heavier use of hosted models.

 Freemium

Free to install, with paid plans on the pricing page.

Browser extension Web, Browser extension
  • Works with many AI providers and local models
  • YouTube, PDF and page summaries in place
  • Works on the current page from a sidebar
  • Access to several AI model providers
  • Mainly a Chrome extension
  • Hosted models send page content to third-party AI providers
  • Page content is sent to cloud AI services
  • No Firefox extension listed
Browser extension Web application, Browser extension
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Not stated if an account is needed
Needs internet Needs internet

Checked September 23, 2026

Checked October 1, 2026

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