Barlesque is a Firefox add-on that reclaims useful window space by collapsing the wide grey add-on bar, improve the browsing space by transforming the wide grey addon bar into a neat set of buttons.
Barlesque expects user to have the add-on bar switched on ("View" menu -> "Toolbars" -> check the "Add-on Bar").
Youll see the effect of extension immediately after installation; add-on bar wont be the solid horizontal band at the bottom, but will cover only a portion of the space instead.
Also, you can quickly hide the add-on bar by clicking on the dark-grey down arrow icon at the left (if add-on bar is bound to the right edge of screen) or right (left edge of screen) side of add-on bar. Later you can expand the add-on bar with the same icon (it will show up-facing arrow).

Requirements:
* Firefox

The license of this software is Free, you can free download and free use this browser plug-ins software.