nmon - This systems administrator, tuner, benchmark tool gives you a huge amount of important performance...
WhoCrashed - WhoCrashed reveals the drivers responsible for crashing your computer.
iftop - iftop does for network usage what top(1) does for CPU usage.
WhatIsHang - Get information about hanging/freezing (stopped responding) Windows program.
vtop - vtop is a graphical command-line tool that uses unicode braille to chart CPU and memory usage.
WinDbg - WinDbg is a multipurposed debugger for Microsoft Windows, distributed on the web by Microsoft as...