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Tab Session ManagerOneTab
Free

Free and open source under the MPL.

 Free

Free to use. The software is closed source.

Browser extension Browser extension
  • Automatic periodic saves mean a crash or misclick costs nothing
  • Optional Google Drive sync moves sessions between machines
  • One click clears a runaway tab bar without losing anything
  • Lists can be named, locked and shared
  • Cloud sync depends on a Google account
  • Very large session histories slow the interface
  • Closed source, and the shared-list feature uploads your URLs to their server
  • Restoring a large list reopens everything at once
Browser extension Browser extension
Open source Closed source
License: MPL-2.0 License not stated
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 22, 2026

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