Rated 5 out of 5 stars

Does what it says without causing any trouble. However, for the sake of completeness, its job can also be done with TabHunter, which also lets you jump to tabs, and search inside their titles, URLs, and even inside the pages themselves. The only difference is that tabs to be closed can't be selected with checkboxes, but have to be clicked while holding down CTRL (like files in Explorer) and then closed from the context menu. There also is an extension called Multiple Tab Handler which lets you select tabs and do various things with them (including closing them). Those two make this extension pretty much obsolete. Still, I'm giving it five stars because it works as advertised and it wouldn't be fair to compare it with the competition when it gets its job done just fine.