Save and restore the state of windows and tabs. It also supports automatic saving and cloud sync.

Chrome version: https://chromewebstore.google.com/detail/tab-session-manager/iaiomicjabeggjcfkbimgmglanimpnae Edge version: https://microsoftedge.microsoft.com/addons/detail/jkjjclfiflhpjangefhgfjhgfbhajadk Version 7.2.0

Added support for saving tab groups in Firefox
- In Chrome, saving tab groups no longer requires additional extensions
Fixed an issue where deleting tags could not be undo/redo

Version 7.1.0

Version 7.0.0

Migrated extension from Manifest v2 to v3
- This ensures continued support in browsers!
Changed the minimum interval for regularly autosave from 0.1 minutes to 0.5 minutes
- This change is due to limitations in Manifest v3
Fixed the behavior of tracking sessions
Fixed the issue where windows opened outside of the tracking window were added when the "Track newly opened windows" option was enabled
- Fixed the issue where tab groups were not saved in tracking sessions

See more release notes https://github.com/sienori/Tab-Session-Manager/releases I was inspired by the following great add-ons, developed as an add-on for Firefox 57 or later. Session Manager by Michael Kraft http://sessionmanager.mozdev.org/index.html