cpulimit - CPU Usage Limiter for Linux - cpulimit is a simple program which attempts to limit the cpu usage of...
Process Tamer - Freeware Microsoft Windows utility that monitors the CPU use of applications, alerts when they use too much, and reduces their priority to keep your PC fast.
Process Lasso - Process Lasso is NOT yet another task manager.
SysGauge - SysGuage is a responsive software utility that monitors the memory status, CPU usage, as well as network and disk activities of your system.
htop - htop - an interactive process viewer for Unix. This is htop, an interactive process viewer for Unix systems. It is a text-mode application (for console or X terminals) and requires ncurses. Latest release: htop 2.
Big Meter Pro - Big Meter Pro is a utility that monitors the disk and memory of your CPU.