Software & Apps Backup & Utilities Keyfinder Thing v3.1.5 A Full Review of Keyfinder Thing, a Free Key Finder Tool Share Pin Email Print Backup & Utilities Design Cryptocurrency MS Office Windows Linux Google Drive Apps File Types Backup & Utilities View More 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 22, 2020 Keyfinder Thing is an easy to use, fully-featured free key finder program. If you're preparing to reinstall Windows or any one of dozens of other programs but can't locate the product key or serial number required to install it, you've just found one very useful program! Keyfinder Thing will find many of these keys and serial numbers and will even search your entire registry for ones that it's not aware of - a unique feature to Keyfinder Thing. In a Hurry?: Skip the review and see the complete step-by-step guide to Keyfinder Thing. Download Keyfinder Thing Please read our Key Finder Programs FAQ for more information on key finder programs in general. This review is of Keyfinder Thing v3.1.5. Please let us know if there's a newer version we need to review. More About Keyfinder Thing Here are some more details on Keyfinder Thing, including what major operating system and software programs it finds product keys and serial numbers for: Finds Keys for Operating Systems: Windows 7, Windows Vista, Windows XP, Windows 2003 Server, Windows 2000, and Windows ME Finds Keys for Other Software: Microsoft Office 2007, Office 2003, Office XP, Microsoft Money, Nero, Corel Suite, The Sims, and many more programs. What We Like Simple user interface Extremely small download size Quick install Used for many Windows operating systems and nearly all Microsoft Office versions Finds product keys for many popular applications and games Ability to export found keys for backup purposes Instant display of several product keys Ability to scan entire registry for serial numbers What We Don't Like Slower to load than competition Does not find the correct product keys for Windows 10, Windows 8, or Windows NT Tries to install other programs during setup Our Thoughts on Keyfinder Thing Keyfinder Thing is an excellent keyfinder choice if you're looking for that obscure product key or serial number. It's a quick download and easy to use. Found product keys and serial numbers for several of your programs are displayed in the main program window. As of version 3.1.6, Keyfinder Thing will automatically locate the product keys for several Windows operating systems and most if not all versions of Microsoft Office. According to documentation with Keyfinder Thing, over 80 serial numbers or product keys can be found from programs like Microsoft Money, Microsoft Works, several Microsoft Visual Studio applications, Age of Mythology, ACDSee, Nero, ISO Buster, Winzip, ZoneAlarm, WordPerfect Suite, PowerDVD, Battlefield 1942 and Need for Speed. Keyfinder Thing can also locate the serial numbers for Sims, Sim City 4, Star Wars: Republic Commando, O&O Defrag Pro, Registry Mechanic, Partition Magic, Roxio Easy CD Creator, Norton System Works, Ulead Video Studio, Winzip, ZoneAlarm, and more. Keyfinder Thing will also scan your registry for serial numbers that it's not preprogrammed to find. Keyfinder Thing successfully found several additional serial numbers after a scan on one of my computers. This is a very handy feature. I'm very comfortable recommending Keyfinder Thing to anyone needing to find a serial number for a video game or non-Microsoft program. Download Keyfinder Thing Didn't Find What You Needed With Keyfinder Thing? If you're looking for a serial number that Keyfinder Thing didn't find, just try another free key finder program or maybe even a premium key finder tool.