I reviewed the QT Tab Bar back in May.  Recently, I installed the QT Address Bar by the same author.  QT Address Bar adds an Address Bar onto Explorer windows.  Unlike the normal Explorer Address bar, however, the QT Address Bar displays your folder in a breadcrumb format.  Each directory level can be clicked to go up to that level.  Little arrows next to the name of each level can be clicked to browse the folder structure from that level on down.  This, combined with QT Tab Bar, has allowed me to hide the normal Explorer Address and Standard Buttons bars.  The only feature I’m missing with this arrangement is a Views button to allow me to toggle between Details and Thumbnails modes.  I can easily go to the View menu for this functionality, but it is taking a little getting used to.  Otherwise, QT Address Bar is a very good accompaniment to QT Tab Bar.