Software & Apps Windows ProduKey v1.93 Free Product Key Finder Tool Review A Full Review of ProduKey, a Free Key Finder Tool Share Pin Email Print Windows The Ultimate Laptop Buying Guide By Tim Fisher General Manager, VP, Lifewire.com Tim Fisher has 30+ years' professional technology support experience. He writes troubleshooting content and is the General Manager of Lifewire. our editorial process Facebook Twitter LinkedIn Tim Fisher Updated January 06, 2020 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. Download ProduKey This review is of ProduKey v1.93. Please let me know if there's a newer version I need to review. Please read my Key Finder Programs FAQ for more information on key finder programs in general. More About ProduKey Here are some more details on ProduKey, including what major operating system and software programs it finds product keys and serial numbers for: Finds Keys for Operating Systems: Windows 10, Windows 8, Windows 7, Windows Vista, Windows XP, and Windows 2000 Finds Keys for Other Software: Microsoft Office 2013, Office 2010, Office 2007, Office 2003, Exchange Server, and SQL Server Pros: Very small downloadDoesn't require installation (portable)Easy to navigate interfaceInstant display of product keys for several Microsoft programsAbility to discover product keys from remote and offline registriesExport product keys to an HTML file for backupCan copy product keys without exporting Cons: Lack of support for popular non-Microsoft programsDefault display of Product ID and Product Key could be confusing to beginners My Thoughts on ProduKey ProduKey is an excellent free key finder as long as you're only after a Microsoft product key. Product keys are displayed right away when the program is launched. The thing I like most about ProduKey is how easy it is to load product keys from external Windows installations or from other computers on your network. This feature makes ProduKey valuable as a way to extract the Windows product key from a damaged computer where booting into Windows is impossible. My biggest concern with ProduKey is that the product ID, not the product key, is displayed first in the results window. There's little use for the product ID — it's the product key that's necessary when installing the program. This might be confusing if you don't know the difference. NirSoft seems to regularly update ProduKey which I see as a good sign that it will be around for a while. I have no qualms about recommending ProduKey to anyone needing to find a Microsoft product key, especially if that key is located on a networked or crashed PC. Download ProduKey Didn't find what you were looking for with ProduKey? Try another free key finder program or maybe even a premium key finder tool. Another product key finder program might be able to find the serial number or product key for the specific application you're after.