JSI Tip 8202. Belarc Advisor freeware builds a detailed profile of your installed software and hardware.

Belarc Advisor builds a detailed profile of your installed software and hardware,
including Microsoft hotfixes, and license keys. It displays the results in your Web browser.
All of your PC profile information is kept private on your PC and is not sent to any web server.

NOTE: The license associated with the Belarc Advisor product allows for free personal use only.
            Use on multiple PCs in a corporate, educational, military or government installation is prohibited.

See the profile for my PC, which I have modified to obfuscate license information: