Process Lasso - Process Lasso is NOT yet another task manager.
Auto-CPUFreq - An automatic CPU speed & power optimizer for Linux.
AnVir Task Manager - This tool controls programs, disk, CPU. Replace task manager, tweak and tune up XP or Vista.
Zzz - Zzz is a custom power management utility for Windows that is designed to eclipse built-in power management systems.
cpulimit - CPU Usage Limiter for Linux - cpulimit is a simple program which attempts to limit the cpu usage of...
PowerTOP - PowerTOP is a Linux tool to diagnose issues with power consumption and power management.