vbetool uses lrmi in order to run code from the video BIOS. Currently, it is able to alter DPMS states, save/restore video card state, and attempt to initialize the video card from scratch. It exists primarily in order to increase the chances of successfully recovering video state after an ACPI S3 suspend.
wavemon is a ncurses-based monitor for wireless devices. It allows you to watch the signal and noise levels, packet statistics, device configuration, and network parameters of your wireless network hardware. It has currently only been tested with the Lucent Orinoco series of cards, although it should work (with varying features) with all devices supported by the wireless kernel extensions written by Jean Tourrilhes.
The Philips LightFrame2 is a technology for TV-quality video and photo display on a computer monitor. LightFrame(tm) is a combination of hardware and software for Windows. xLightFrame brings almost the same functionality to X. You can highlight the whole screen, or any part of it. This program is useful only on Phlips LightFrame-capable monitors, like the model 109S. It is an independent program that has no relation to or links with Philips. You can use it from the command line, or with help from the companion script lfw.sh.
xmbmon is a monitoring program for motherboards which can monitor the CPU temperatures and the frequency of CPU cooling fans, etc. The package includes "mbmon", which can be used at the commandline to report the temperatures, voltages, and RPM (rounds per minute) of the fans, and "xmbmon", which displays the three temperatures and a core voltage as simple curves.