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.
Window Detective - Window Detective is a programmer's tool used to "spy" on an application's windows...
Big Meter Pro - Big Meter Pro is a utility that monitors the disk and memory of your CPU.
WinSpy - Retrieve window information.
SysGauge - SysGuage is a responsive software utility that monitors the memory status, CPU usage, as well as network and disk activities of your system.
Winspector Spy - Have you ever used Spy++ that comes with MSVC?