Hard Drive Inspector is described as 'powerful, effective and easy-to-use program that monitors hard drive health. In many cases it is able to warn the user about forthcoming disk failure in advance, thus preventing information loss' and is an app in the OS & Utilities category. There are more than 10 alternatives to Hard Drive Inspector for a variety of platforms, including Windows, Linux, Mac, BSD and PortableApps.com. The best alternative is CrystalDiskInfo, which is both free and Open Source. Other great apps like Hard Drive Inspector are GSmartControl (Free, Open Source), Hard Disk Sentinel (Paid), smartmontools (Free, Open Source) and HDDScan (Free).
CrystalDiskInfo is a HDD/SSD utility software which supports S.M.A.R.T. It shows the health status much more clearly than similar tools. The "Function / Graph" is especially interesting for the "Reallocated Sectors Count".
The smartmontools package contains two utility programs (smartctl and smartd) to control and monitor storage systems using the Self-Monitoring, Analysis and Reporting Technology System (SMART) built into most modern ATA and SCSI harddisks.
HDDScan is a freeware utility for storage devices diagnostics (HDD, RAID, Flash). The program can scan storage device for bad blocks, show S.M.A.R.T. attributes and change some HDD parameters such as AAM, APM, etc.
PassMark DiskCheckup allows the user to monitor the SMART attributes of a particular hard disk drive. SMART (Self-Monitoring Analysis and Reporting Technology) is a feature on a computer's hard disk for providing various monitoring indicators of disk reliability.
StableBit Scanner is a state of the art disk health monitoring tool. - Monitors the SMART data of your disks, and presents them in an easy to read, meaningful way. - Lists detailed information about your disk, including the connection type, bus speed, and supported features.
Ashampoo HDD Control 2 provides complete monitoring of your hard drive(s). The software supports not only all common IDE and serial ATA hard drive(s), but also provides improved support for external USB hard drives and solid state drives (SSDs).