The Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key used to install windows from your registry or from an unbootable Windows installation.
It works on Windows 95, 98, ME, NT, 2000 and XP.
It has options to save the keys to a text file, or print them out.
Open Source - This means that it can be trusted. The Keyfinder does not contain trojans or "phone home" messages. No spam, spyware, viruses, or trojans. Office 2007 & Windows Vista support! An optional config file - this functionality lets you pull a key stored in the registry for any software. A sample config file is included in the zip and can be seen here: keyfinder.cfg Command line options - /save /savecsv /close /hive /file Load Hive option - allows you to load the registry hive of another Windows installation. To use, put the hard drive in a working machine (must also be Windows 2000,XP or Vista) or use Windows PE (not tested, should work) and click Load Hive. Then point it to the dead Windows install. If you're using Windows Vista, Administrator rights are required for this feature. You may have to right click on the Keyfinder and run as Administrator. Improved Save & Print! - save & print options will now include all keys. Save is also available in text or CSV.