FVWM-Crystal aims to create an easy to use, pretty, but also powerful desktop environment for Linux or other Unix-like operating systems. It uses the following programs: FVWM as a window manager and "main core"; different ways to provide icons on the desktop including support for many file managers and custom commands; xterm, aterm, mrxvt, or urxvt as terminal emulators; MPD or XMMS2 as music players (there's built-in support for controlling these programs), and several other tools for different functions, like setting a wallpaper or taking screenshots.
HelloUsers is a Web application for communication between network administrators and users. It is like a notice board. It contains an extended administrative panel and assures that a news item from an administrator will be viewed by network users. It uses iptables to redirect Web traffic to a local HTTP server located on the network router.