power
wmab

WMab is a Window Maker dockable application that allows ACPI laptop users to graphically monitor their power sources status, i.e. whether or not AC or batteries are in use as well as how long it will take to drain or charge the batteries.
wmacpi

This is port of WMApm 1.1 (see below) with ACPI support. Check README, and please report success/failure issues to me. Since I can’t determine “time remaining” from the information provided, its value has been replaced with “system power load”, which is roughly how much power is being used while on-battery. Note, this (for now) only supports laptops with one system battery. I am working with kernel acpi people to standartize power reporting interface, and when it’s usable, WMApm will be updated to support any number of batteries, and provide full information about ACPI power sources. Right now, all I can say is that it works on my laptop :)
wmacpiload

An app for monitoring CPU temp and battery time from ACPI. In the style of wmcpuload and wmapmload.
wmbatppc

A dockapp for Window Maker on linuxppc, monitoring power management on PowerBooks, G3s, and iBooks.
wmbatteries

wmbatteries - a dockapp based on wmacpiload. monitors up to 2 battery capacities, remaining time, current power consumption and cpu temperature. requires recent acpi kernel
wmbattery

Wmbattery displays the status of your laptop’s battery in a small icon. This includes if it is plugged in, if the battery is charging, how many minutes of battery life remain, battery life remaining (with both a percentage and a graph), and battery status (high - green, low - yellow, or critical - red).
wmpower

wmpower is a Window Maker dock application for linux allowing the user to graphically see (and set) the power management status of his laptop. It supports both APM and ACPI kernels, plus it interfaces directly to toshiba hardware (but should work with every laptop).