Openbox is a free window manager for the X Window System, licensed under the GNU General Public License. Openbox was originally derived from Blackbox 0.65.0, but has been totally rewritten in the C programming language and since version 3.0 is not based upon any code from Blackbox.
Openbox is designed to be small, fast, and fully compliant with the Inter-Client Communication Conventions Manual (ICCCM) and Extended Window Manager Hints (EWMH). It supports many features such as menus by which the user can control applications or which display various dynamic information. Openbox is the standard window manager in LXDE.
There are only two configuration files located in ~/.config/openbox. They are named menu.xml and rc.xml. If users do not want to edit them by hand, they can do most of the configuration with an easy-to-use tool called ObConf. All mouse and keyboard bindings can be configured. For example, if a user wants a window to go to desktop 3 when the close button is clicked with the middle mouse button, the user can do this trivially. Scrolling on the icon to move to the next/previous desktop and raising or not raising when clicking/moving a window is fully configurable.