KeyFinder Thing is a simple utility to retrieve the Serial numbers or CD Keys of Microsoft software installed on your system. It includes options to export the list of found keys and a search option to find keys not included by default.
Whilst this utility is aimed at Microsoft products, the author have built it to be versatile so he can include other non-MS products. Currently KeyFinder Thing is able to search for serial numbers or CD keys for 90 software titles.
There are 2 versions of Keyfinder Thing, The Lite and Full version, the full version requires you to have .NET 2.0 FX installed!

Source: raymond.cc
OS: Windows 2000/XP
Language: English
Licence: Freeware
Download size: Full = 196 KB, Lite = 47KB
Download: Keyfinder Thing Lite here!
Download: Keyfinder Thing Full here!