wmpower+ is Window Maker laptop power management dockable application. It displays the battery status, the number of fans or the fan speed, and CPU temperature, and allows you to switch the power management status of some laptops. It is based on wmpower by Michele Noberasco, which doesn't work with the new kernels starting from 2.6.36.
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.
wtch periodically runs a shell command COMMAND and watches its output. When it changes it runs shell command ACTION. More precisely, it runs ACTION when a specified event occurs. The event can be a change of COMMAND's output, a change matching a certain pattern, or its negation, output equal to some previous output, etc. The output pattern defining an event is set by the --pattern option. By default, it simply detects any COMMAND output change.
x11vnc allows one to remotely view and interact with real X displays (i.e. a display corresponding to a physical monitor, keyboard, and mouse) with any VNC viewer. It is designed to be compatible with all Unix variants and Mac OS X, and depends on a small set of standard libraries. It supports SSL/TLS and VeNCrypt encryption, Unix password logins, single port access, Zeroconf, file transfer, and UltraVNC extensions. It is part of the LibVNCServer project.
xSH-Paranoia Patch is an project started for admins who work in large system environments. It allows you to see which user executes which command, when, where, and from what IP address. It logs everything to syslog, and with syslog-ng, you can log it to another machine where no user should/would have access. Currently supported shells are bash and tcsh.