SSD (Sawfish Session Dialog) is a small and flexible wrapper for session commands. It is intended to be used with Sawfish, but does not require it. It can be configured to use any command for logout, reboot, shutdown, suspend, hibernate, and lock actions. Preset command definitions are available for: KDE4, GNOME2, XFCE4, MATE, and Razor-Qt. It is part of Sawfish-Extras (currently there's only SSD, but more is planned).