Compare software

Vessel BrowserDia
Freemium

Open source; Vessel Premium costs $5.99 per month with a 7-day trial.

 Freemium

A free tier is available. Heavier use requires a paid plan.

Windows, macOS, Linux macOS
  • AI actions shown in a real browser window with approval steps
  • MCP control for external agent tools
  • Assistant reads your open tabs, so questions do not need copy and paste
  • Early software, not recommended for sensitive accounts
  • Linux is the only mature install target
  • macOS only and requires an account
  • The assistant sends page content to a remote service, which has privacy implications
Downloadable app Downloadable app
Open source Closed source
License: MIT 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.