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.
Mac Product Key Finder - Mac Product Key Finder is a simple tool for recovering lost product keys for mac applications.
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.
KeyFinder Thing - KeyFinder Thing is a free, simple and easy to use application for recovering serial keys and product keys of most of the products and installed programs.
ProduKey - Recover lost product key (CD-Key) of Microsoft Office 2003, Office 2007, Windows XP, Windows Server 2003/2008, Windows 7, and more.
Get My Keys Back - Get My Keys Back is for getting back the original keys and serial numbers.