clipped from: firefox.exxile.net 
All-in-One Sidebar (AiOS) is a sidebar control, inspired by Opera's.
Click on the left edge of your browser window to open the sidebar and get
easy access to all your panels. It lets you quickly switch between sidebar
panels, view dialog windows such as downloads, add-ons, and more
in the sidebar,
or view source code or websites in the sidebar. It includes a slide-out button
and a toolbar, all of which can be extensively customized.
The options dialog gives you the ability to configure many features, behaviors and the appearance of All-in-One Sidebar.
Enjoy a clear browser window, more toolbar space and much more...
