There’s nothing more annoying than being the victim of an aberrant Windows program which hangs the whole system at random moments. What is Hang? is a very useful little free utility from the prodigious Nirsoft, which tracks down errant programs and gives you the chance to sort out the problem. Sure, you’ll need to be a little bit geek to grok the language, but hey, nothing in life is completely free, right? One for the toolbox.
Sometimes, Windows or a running application hangs, the user interface abruptly stops responding, and you cannot determine what has caused the problem or how to troubleshoot the issue. This utility tries to detect the software or process that is currently hung, and displays some information that may allow you to sort out and understand what exactly is at the root of such unexpected behavior.