Minimalistic visual interface
Extremely fast
Translations to over 20 languages
Solid and reliable look and feel
*box style themes with a huge number of enhancements
Advanced focus cycling dialog (with faded iconic windows)
Focus cycling to panels and desktop windows
Focus cycling across all desktops
Combined client list menu (with faded iconic windows)
Dynamically built menus with Pipe menus
Caching pipe menus
Auto start programs when logging in graphically
Graphical log in options for GNOME or KDE with Openbox as the window manager
Supports 32-bit true transparent windows
Extensive language rendering support
Configurable mouse interaction with windows (Mouse bindings)
Extensively configurable key bindings
Dynamic desktops (add and remove desktops in any order)
Emacs key-chain key bindings
Key-chain on screen display
Chrootable key bindings and key quoting
Extensive Xinerama (TwinView) support
Multiple screen support (Through running multiple instances of Openbox - they cooperate with other screens)
Actively maintained
True partial-strut support
Application launching notification from Openbox menus
Keyboard shortcuts in all menus
Show hostname in the titlebar for remote clients
Complete EWMH support (1.4-draft2)
Laptop power friendly (support for user-time window property)
Animated iconify and restore
Support for applications from all desktops and toolkits
Synchronized window resizing
Flexible and powerful per-window settings
Moving maximized windows between monitors on Xinerama (TwinView) setups
User specified fonts
Resize handles around the edge of window frames
Openbox provides three menu options that will be in the Session Type menu when you are logging in, if they are available. The "GNOME/Openbox" option will only be present if you have GNOME installed, and the "KDE/Openbox" option will appear only if KDE is installed.