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Updated by Tracy King on Oct 24, 2023

How to find the best Windows key finder? If you want to set up your Windows operating system again, you need to type the license to reuse it. But it is hard to keep the serial number information since you've purchased software for a long time. So a product key finder is necessary. Instead of rummaging up your receipt, email, manuals, stickers for the searching key, the product key finder lets you easily find your Windows serial number for reinstallation, more than Windows, Microsoft software, or any software.

In this article, we will list some hotkey finders for you. Some programs support getting a serial number of a bunch of tools.

1 - EaseUS Key Finder
2 - Windows Key Viewer
3 - Belarc Advisor
4 - LicenseCrawler
5 - Free PC Audit
6 - Abelssoft MyKeyFinder

1 - EaseUS Key Finder

EaseUS Key Finder is a useful tool for exporting product keys, transferring data from an old PC to a new PC, move programs between drives. The "Product Key" feature is designed to gather key information of Windows, Adobe, Office.

When you run EaseUS Key Finder, it will quickly scan your programs and list your needed license key on the list. Launch the program, and you can see the "Product Key" features on the left panel, click the tab to find product keys for Windows, Adobe, and Office. Click the copy and save numbers to another place that is easy to search in the future.

EaseUS Key Finder can find Windows 10 product key, also work on Windows 8/8.1/7. As Windows 11 is just the corner, you can use it on Windows 11 PC.

  Free Download

Support Windows 11/10/8/7


  • Clear interface.
  • Fast scan.
  • Support Windows 11/10/8/8.1/7.
  • Secure to keep info.
  • Copy the Windows key to the safe location.
  • Support 1000+ software.


  • Need to pay for the pro version.


2 - Windows Key Viewer

Using Windows Key Viewer, the Windows product key can be easily detected. It is a fast scanning tool. As its product name said, it only provides Windows product keys. But if you only tend to get keys for Windows OS, this free software can meet your needs in advance.

Showing all related OS info, you can get the data like product ID, Install Date/Time, Registered User, Windows Update Time, Build Number, and Machine GUID. Windows Product Key is shown on the box. But the official website looks unsecure to download programs and it shows misleading ads after clicking download links.

Windows product key viewer


  • Free to use
  • Fast scan
  • Available on Windows 95/98/ME/NT/2000/2003/XP/V ista/7/8/10


  • Only find Windows product key
  • Download page contains misleading ads

3 - Belarc Advisor

Belarc Advisor is a free system information tool, which gathers detailed info on your installed software and hardware, software update, software licenses, antivirus status, and more. All will be display with an HTML file shown on the browser.

When you run Belarc Advisor, it does the fast scan automatically, the same as finding keys of any installed program. After it is complete, click the "Software License" tab on the left menu to get product keys for Windows.

find product key via belarc advisor


  • Totally free for personal user
  • Fast analysis
  • Keep data in private
  • Find keys for installed applications.


  • No security benchmark score for Windows 10

4 - LicenseCrawler

LicenseCrawler is a key discovery tool to scan the Windows Registry for the Windows product key or other applications.

As a portable app that doesn't need an installer, you can download the zip file named "LicenseCrawler.exe" on your USB flash drive and run it on several computers. Unlike the above software, it has ads when performing programs. If you are often using a product key finder for other applications that are purchased and registered, it is a bit inconvenient.

find product key licensecrawler


  • Completely Free
  • Discover keys for all the programs you have installed
  • Portable app


  • Slow scan
  • Show ads

5 - Free PC Audit

Used as a portable app, Free PC Audit is a free information tool designed to exact information of all PC components. This freeware doesn't require an installer and can run through removable storage devices like USB flash drives and other devices. Launching the programs, you can check the basic version and product key of the installed software.  

The interface shows a three-tab, click the System and Software to get your Windows 1o product key, and copy the number to the clipboard.

find product key pc audit


  • Complete free
  • Portable app


  • Only for Windows keys

6 - Abelssoft MyKeyFinder

Abelssoft MyKeyFinder is a robust product key finder having two versions. If you just want to scan serial numbers on your local computer, the free version even has ads, which is convenient. Or you want to perform the key function on the external hard drive and know the WiFi password, pay for the plus version. One highlight of this tool is to filter the search result with a simple click.

find product key via mykeyfinder


  • Straightforward interface
  • No duplicate results
  • Filtered results
  • Export Keys with various options (Like PDF...)


  • The free version has ads.

To Sum Up

In this article, we've listed 6 Windows product finders for you. Read on the pros and cons of each software and quickly find your serial number.

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Updated by Tracy King

Tracy became a member of the EaseUS content team in 2013. Being a technical writer for over 10 years, she is enthusiastic about sharing tips to assist readers in resolving complex issues in disk management, file transfer, PC & Mac performance optimization, etc., like an expert.

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About EaseUS Key Finder

EaseUS Key Finder offers complete solutions for you to efficiently find Windows or Windows Server product keys, discover Offce, Adobe, and other installed software serials, and find WiFi codes, etc, successfully in simple clicks.

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