Compare software

TabbitPerplexity Comet
Freemium

Free to download and try; paid plan details are not given on the homepage.

 Freemium

A free tier is available. Full agent features require a Perplexity subscription.

Windows, macOS Windows, macOS
  • Agent mode for multi-step tasks in the browser
  • Many AI models from different providers
  • Assistant can act on pages, not only summarise them
  • Relies on cloud AI models
  • No Linux version
  • Requires a Perplexity account, and an agent acting on logged-in sites carries real risk
  • Closed source
Downloadable app Downloadable app
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Needs internet Not stated if it works offline

Checked October 2, 2026

Checked September 22, 2026

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