History Tree is a browsing history Firefox add-on which shows your browsing history as a tree diagram and a grid of web-page screenshots that you can use to quickly find any page you have visited while browsing. History Tree can either visualize the history of one tab at a time or all tabs at once. Another great thing about History Tree is that it distinguishes between different Firefox windows, something that the default Firefox history manager is not offering as it only displays a combination of all visited pages regardless of the window they have been opened in.This Firefox extension is indeed the best Firefox history add-on as Ghacks notes but unfortunately, it does not work on Linux.
