Once installed, the app will display a window just below every folder that you open, where you can directly access other folders that you may have previously established as favorites, as well as the folders belonging to the app you are currently using.
Configuration options let you set the size of the window, adjust the color of the different sections, and even activate and deactivate sounds. You can also put certain programs on the black list, so that the window will not appear.
Buzz Folders is a very interesting app, although its interface is not very intuitive.
Works for thirty days.