There are many alternatives to Open Hardware Monitor for Windows and since it's discontinued a lot of people are looking for a replacement. The best free Windows System Information Utility alternative is HWiNFO (32/64). It's not free, so if you're looking for a free alternative, you could try HWiNFO (32/64) or Libre Hardware Monitor. If that doesn't suit you, our users have ranked more than 50 alternatives to Open Hardware Monitor and many of them are free and System Information Utilities available for Windows so hopefully you can find a suitable replacement. Other interesting free Windows System Information Utility alternatives to Open Hardware Monitor are Sidebar Diagnostics, HWMonitor, Rivatuner Statistics Server (RTSS) and Core Temp.
Libre Hardware Monitor is a fork of discontinued Open Hardware Monitor, and practically just like its predecessor, with updates for recognizing today's hardware. I built a new PC and tried several alternatives which left me unsatisfied, until I found Libre which worked exactly like Open Hardware Monitor in my soon-to-retire 6 years old PC. Problem solved!