Tab Groups - Firefox

One of the most useful new features of Firefox was the concept of tabs and tabbed browsing. Microsoft incorporated this feature in a later browser release. The ability to have multiple sites open without spawning a new window for each one not only eliminated a lot of clutter, but made it easier to move from one site to the other and keep track of all of them.

The Tab Groups extension for Firefox adds another level of organization to the tab concept by allowing you to form groups of tabs. These groups can be tabbed through as well. If you're a power user who needs multiple sites open at the same time you will find this very useful. Maybe you want to research a topic in one group, check the news in another, and keep your lunchtime browsing in a separate group. Just keep in mind that every tab you spawn is taking up a fair amount of memory.