dwm is a fast and simple window manager for X11. It manages windows in tiled and floating layouts. Either layout can be applied dynamically, optimizing the environment for the application in use and the task performed. Windows can be tagged with one or multiple tags. Selecting certain tags displays all windows that are accordingly tagged. dwm is the little brother of wmii.
wmsupermon is a universal monitoring dockapp. It can be used to monitor CPU usage, disk I/O, memory usage, swap, filesystems, space utilization, network traffic, wireless link quality, CPU frequency, CPU temperature, fan speed, voltages (without requiring lm_sensors), battery status (with actual, not "reported", discharge rate), traffic from your router, or anything else. It can open and maintain many dockapp windows with one dockapp process.
Xfld (Xfce live demo) is a liveCD that demonstrates the latest version of the Xfce desktop environment and provides a complete GNU/Linux operating system (based on Ubuntu), which can be run directly from the CD. In contrast to the Xubuntu install CDs, the Xfld CD contains all tools and applications necessary for both productive usage with the graphical interface and the command line interface. Furthermore, the main purpose of Xfld to demonstrate the latest Xfce.