Undo Close Tab - Reopens the last closed tab.
Tabs Outliner - Next Generation Session, Windows, Tabs Manager and a TooManyTabs Solution That Really Works.
UndoClose - UndoClose is a free program that remembers all recently closed folders and applications, so that...
Session Box - Using websites with multiple accounts at the same time is made easy.
MySessions - MySessions is a simple session manager.
Tab Tally - Firefox add-on, displays how many tabs are open.