For Firefox users who are constantly referring to multiple pages, tabbed browsing is not a feature, but a way of life. There are enough of us that the Firefox addon page lists more than 110 extensions related to tabs. These extensions feature everything from simple add-ons to various means of saving tab addresses and sessions to thumbnails and collections of functions, as well as one or two uncategorizable ideas.
If you regularly have more than half a dozen tabs open, one of the first things you notice is how limited the default controls for managing them can be. One of the most basic yet most useful extensions is remove tabs, which allows you to close all tabs to the right or left of the current one. The remove tabs extension also ships with a Close All function that is not enabled by default, although you might choose Close All Tabs instead.