LicenseCrawler Overview
If you want to setup your computer system again you need to have the licenses and serial numbers at hand for all the software programs that you have purchased and registered. This does include the Windows product key but also other serial numbers for applications like Nero, Office, VMWare and pretty much every other application.

Instead of searching for the keys in your e-mails, manuals and recipes you could use another approach. LicenseCrawler is a sweet little application that scans the Windows Registry for Windows product keys and other serial numbers and licenses.

The LicenseCrawler 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 portable-version can be run from any location and would be a perfect fit for a USB stick. The software is ideal to backup your system, help IT-Service members and for forensic services.

Asking clients to find serial and license keys is often very frustrating. Instead, tech support can simply run License Crawler without having to interact with the client at all.

Features of LicenseCrawler
Allows for searching for product keys.
Automatically crawls through network connected computers.
Automatically updates its database of software products.
Displays product keys in a variety of formats.
Extracts product keys and serial numbers from the registry hive files.
Has the ability to crawl for product keys from the Windows directory.
Includes an integrated search engine for product keys.
Offers the option to save found product keys as a text file.
Scans the Windows registry to locate product keys and serial numbers.
Searches for product keys and serial numbers in external Windows installations.

VirusTotal Results:
Setup:
https://www.virustotal.com/gui/file/9a076365b79442f088d4c81b6cc2a499522ef87283f81b4acedf1cc929aa9f50/detection
License:
https://www.virustotal.com/gui/file/9a82a5cc9c8f58bd22831e0a547bba412ab97f6071732504f6c5776792253fe2/detection