Process Lasso - Process Lasso is NOT yet another task manager.
CPU Frequency Selector - Cinnamon CPU Frequency Selector Applet
AnVir Task Manager - This tool controls programs, disk, CPU. Replace task manager, tweak and tune up XP or Vista.
Prime95 - Prime95 is a program that searches for new Mersenne prime numbers.
cpulimit - CPU Usage Limiter for Linux - cpulimit is a simple program which attempts to limit the cpu usage of...
HeavyLoad - The individual test methods employed by HeavyLoad can be customized to fit your needs.