The Belarc Advisor builds a detailed profile of your installed software and hardware, network inventory, any missing Microsoft hotfixes, anti-virus status, security benchmarks, and 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.
Tool Description as in https://www.belarc.com/products_belarc_advisor
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Magical Jelly Bean Keyfinder
The Magical Jelly Bean Keyfinder is a freeware utility that retrieves your Product Key (cd key) used to install windows from your registry. It also has a community-updated configuration file that retrieves product keys for many other applications. Another feature is the ability to retrieve product keys from unbootable Windows installations. If you need something more powerful, compare Magical Jelly Bean Keyfinder with a tool called “Recover Keys”. This advanced product key finder is not free, however it doesn’t cost much for what it does.
Tool Description as in https://www.magicaljellybean.com/keyfinder/
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Win keyfinder is a Small Freeware Utility that helps find Windows Product/CD Key that was used during Windows Installation from system Registry, it can retrieve lost product key from MS Windows 8, MS Windows 8.1, windows XP, win 2000, windows me, 98, 2003 and .NET Product keys from the registry and display it for you.
Tool Description as in https://www.winkeyfinder.com/
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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.
Tool Description as in http://www.klinzmann.name/licensecrawler.htm
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KeyFinder Thing is a simple utility to retrieve the Serial numbers or CD Keys of Microsoft software installed on your system. It includes options to export the list of found keys and a search option to find keys not included by default. Whilst this utility is aimed at Microsoft products I have built it to be versatile so I can include other non-MS products so please feel free to email me with any requests for software titles to be included and I will do my best.
Tool Description as in https://keyfinderthing.net/
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Product Key Finder
Product Key Finder is a free tool that will display the installed Windows Product Key and other important Windows system information. Product Key Finder works with the following Windows operating systems (2000, 2003, XP, Vista, 2008, 7), 32-bit and 64-bit. You will be able to save all product keys to a text or an xml file.
Tool Description as in http://download.cnet.com/Product-Key-Finder/3000-2094_4-10958269.html
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ProduKey is an excellent free key finder program. ProduKey is uncomplicated and instantly displays serial numbers and product keys. If you’re getting ready to reinstall Windows (or nearly any other program) but can’t locate the product key or serial number required to install it, ProduKey can help. It will automatically display the product keys and serial numbers for many different Microsoft based applications.
Tool Description as in https://www.lifewire.com/produkey-review-2625099
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WinGuggle is a basic, no frills program that has only one fundamental function; to find your original product key. The program comes in a compressed file, but as soon as you open it, it is a quick click to find your product key. The main tab immediately displays product keys for the Microsoft products installed. In this same tab, users can customize the owner and organization information. The Tools tab allows you to add pertinent information as you see fit. Users can then choose to back up this information.
Tool Description as in http://download.cnet.com/WinGuggle/3000-2094_4-10795752.html
Magical Jelly Bean Keyfinder