Belarc Advisor is a free PC auditing tool that gathers the detail information about your computer to build a very comprehensive profile of your installed software and hardware, network inventory, missing Microsoft hotfixes, anti-virus status, security benchmarks, and displays the result in a well organized html file in your default browser. To keep your privacy, the result html file is saved on your local computer and is not shared to any web server.
It’s a very simple program that doesn’t have a GUI interface. Once installed, simply launch it, and sit back and wait for the result showing off in your browser.
Belarc Advisor runs on almost all Windows versions, even including Windows 9x. Both 32-bit and 64-bit editions are supported. It’s completely free for personal use but if you want to use it on a corporate network, you might need to purchase a license to one of their other products.