Nir Sofer from Nirsoft has quite a bunch of very handy tools for windows. I especially like ProduKey to extract product keys of all Microsoft Programs installed. Safe the information for your next PC migration or rebuild. ShortcutsMan allows you to enumerate all shortcuts on the desktop and in the startmenu and manage them very quickly. Very handy if your (like mine does frequently) Start Menu gets cluttered with all these different program folders and links to web pages and help files that you actually never need.