Undo Close Tab VS TabCloud

Tabs Outliner - Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.

OneTab - Whenever you find yourself with too many tabs, click the OneTab icon to convert all of your tabs into a list. When you need to access the tabs again, you can either restore them individually or all at once.

Tab Utilities - Tab Utilities is an ultimate tab solution for all kind of users who want to manage their tab, create multiple session and search for new tabs, etc.

Toby - Better Than Bookmarks

Undo Closed Tabs Button - Add a toolbar button onto any toolbar to undo closed tabs

Session Buddy - Manage Your Browser Sessions