Ticker.app is just like a ticker, and is designed in the dockapp that is supported by X window managers such as Window Maker, AfterStep, BlackBox, and Enlightenment. It reads a file that is specified by the command line, and displays each line in a viewing area periodically. It rereads automatically when the file has been modified. If you run in a tail-mode, it ticks only the last line.
wmJupiter is a Window Maker applet which features the planet Jupiter. It allows you to keep track of the Great Red Spot and the current distance in astronomical units (AE). The four Gallileo moons (Io, Europa, Ganymede, and Calisto) are also displayed when they are near the planet.
WMixer is a complete OSS mixer solution in dockapp form factor. All channels are supported, stereo channels balance can be adjusted, and main recording source can be set. Volume can also be adjusted using the mousewheel on newer mice, the mixer automatically updates if another program changes mixer channels, and it uses very little CPU time. There is also an "On-Screen-Display" feature to visualize current volume using a TV-like volume bar.