Compare software

JatterPerplexity Comet
Freemium

Free to get started; the site has a pricing page for further plans.

 Freemium

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

Windows, macOS, Android, iOS Windows, macOS
  • AI answers based on your own logged-in accounts
  • Client-side encryption of personal data
  • Assistant can act on pages, not only summarise them
  • Works by reading sensitive pages such as banking and medical sites
  • Few technical details published about how the AI processes data
  • 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
Not stated if it works offline 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.