Tab Outliner

Tab Outliner lets you manage all your Chrome tabs from a central place. It creates an hierarchical list of all your open tabs and windows and presents them in a tree view much like the bookmarks manager of Chrome.

The other advantage of Tab Outliner is that in the event of a crash, you’ll not be forced to open your entire session. You can reopen tabs and windows as needed and the full list will be retained inside Tab Outliner.

It is both a tab manager and a session manager combined in a single add-on.