CrystalDiskInfo is described as «Open-source HDD/SSD utility for monitoring S.M.A.R.T. values, disk temperature and other information» and is a very popular hard disk diagnostic tool in the system & hardware category. There are more than 25 alternatives to CrystalDiskInfo for a variety of platforms, including Windows, Linux, Mac, BSD and PortableApps.com. The best alternative is GSmartControl, which is both free and Open Source. Other great apps like CrystalDiskInfo are Hard Disk Sentinel, HD Tune, smartmontools and Victoria.CrystalDiskInfo alternatives are mainly Hard Disk Diagnostic Tools but may also be Benchmark Tools or Hard Disk Benchmark Tools. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of CrystalDiskInfo.