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Still Needed Rated 5 out of 5 stars
An essential addon that does just what it says, and does it very well: Allows you to browse without leaving a trace (on disk).
Responding to some prior reviews, this addon is _indeed_ still needed, because the new "Start Private Browsing" feature of Firefox starts your private session by closing all your tabs first: Pretty unnecessary if you ask me. What if you want to turn on complete privacy _quietly_, or for just a few seconds? Stealther gives you both of those, along with a better user interface.