FVWM-Crystal aims to create an easy to use, pretty, and powerful desktop environment for Linux or other Unix-like operating systems. It uses following programs: FVWM as a window manager and "main core", ROX-Filer as file manager (manages icons on the desktop), xterm, aterm, mrxvt, or urxvt as terminal emulators, MPD or XMMS as music players, and several other tools for different functions, like setting a wallpaper or making screen shots.
CrystalAudio is a FVWM-Crystal configuration tuned for use on an audio workstation. It has many new applications for the menu, including many sound-related applications and improved sound controls. It launches qjackctl at startup. The final goal of the project is to make the FVWM-Crystal menu compatible with the freedesktop specification and to provide some tools to generate the menu entries and icons from desktop and icon files provided by the applications in the system.