When you have to reinstall Windows and other installed software, you need to genuine license key. If you have lost these keys, it can be easily retrieved from Windows registry using LicenseCrawler. It is a freeware tool which scans the Windows Registry for Windows product keys and other serial numbers and licenses. This includes not only the Windows product key but also other serial numbers for applications like Nero, Office, VMWare and pretty much every other application.
The License Crawler can discover application product keys and other serial numbers or licenses very quickly and supports all versions of Windows operating system from Windows 95 over Windows 7 to Windows Server 2008 R2 (64Bit).
The application requires administrator rights for searching the serials. LicenseCrawler is a neat and useful tool for all Windows users to search the registry for license keys.