This is Cool Switch for Firefox! Rated 5 out of 5 stars
I really like this add-on because it finally gives me the Ctrl+Tab behavior that I have always wanted being that I'm a Windows user who loves alt+tab, or the Cool Switch.
So, this review is dedicated to E N who posted "ok" on September 7th. E N, this isn't a redundant add-on to glorify a feature already present in Firefox. With this add-on, ctrl+tab now behaves as a Windows user would expect it to. Previously, ctrl+tab wasn't enough. I also needed to enlist Ctrl+Page Up and Ctrl+Page Down (try it). But now ctrl+tab works just like alt+tab, or the Windows "Cool Switch", so I no longer need Ctrl+Page Up or Ctrl+Page Down.
This is Cool Switch for Firefox! It's also my new favorite add-on!