Firefox's new tab behavior is a bit inconsistent. Right-click on a link and choose Open Link in New Tab and the new tab opens directly to the right of your current tab. In contrast, if you open a new tab, it opens to the right of all of your open tabs.
Firefox add-on Tab Deque changes this behavior. After installing the add-on and restarting Firefox, new tabs will open next to your current tab. This change alone will keep me using Tab Deque, but it boasts another useful feature that makes it easy to toggle between two tabs. If … Read more