CrystalDiskInfo

Monitor your hard drive and SSD health on Windows. S.M.A.R.T. data, temperature, and warnings.

Windows Open Source Utilities

CrystalDiskInfo reads S.M.A.R.T. data from your drives and displays health status, temperature, power-on hours, and detailed attributes. It warns you before a drive fails — potentially saving your data. Free, portable, and open-source. Supports HDDs, SSDs, and NVMe drives. The tray icon shows drive temperature. Essential for anyone who wants to know when to replace aging storage.