Magical Jelly Bean Keyfinder - The Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key (cd key) used to install windows from your registry. It also has a community- updated configuration file that retrieves product keys for many other applications.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Product Key Explorer - Product Key Explorer is a key inventory and recovery software designed for Windows. It's meant to help users recover, find, and backup their activation keys for more than nine thousand popular software programs... read more.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
ProduKey - Recover lost product key (CD-Key) of Microsoft Office 2003, Office 2007, Windows XP, Windows Server 2003/2008, Windows 7, and more.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.