wmweather displays your current local weather conditions. After supplying a 4-character METAR station identifier code (most major airports have one), it shows station ID, time of the last update, temperature, dew point, pressure, humidity, and wind speed. The various entries can be forced to display in a variety of different units.
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.
wmhdplop is a dockapp for WindowMaker or any window manager/desktop environment that handles dockapps. It monitors IDE and SCSI hard drive activity by sending visual stimuli each time /dev/hdx writes or reads anything. It can also display the temperatures if hddtemp is running as a daemon. The gkrellm port of wmhdplop (gkhdplop) is also provided.