Firefox only: If you love tabbed browsing in Firefox but want more control over the appearance and functionality of the tabs, you'll definitely want to check out Tabberwocky to supercharge your tabbed browsing.

Tabberwocky is a tiny Firefox extension that gives you dozens of ways to enhance tabbed browsing. You can alter the size of the tabs, show download progress on the individual tabs, and for those of you with screen real estate to spare you can even have multiple rows of tabs. Unread tabs can be highlighted and you can alter the opening and closing behavior of the tabs. If you find yourself frequently closing a tab you meant to keep open, Tabberwocky allows you to lock tabs to prevent closure and move the location of the close button to minimize errant clicks.

Tabberwocky is free and works wherever Firefox does. Have some tab-related tricks or extensions you want to share? Let's hear about it in the comments.