GSmartControl is a graphical user interface for smartctl (from smartmontools package), which is a tool for querying and controlling SMART.

HD Tune Pro is a hard disk / SSD utility with many functions. It can be used to measure the drive's performance, scan for errors, check the health status.

HDDScan is a Free test tool for hard disk drives, USB flash, RAID volumes and SSD drives. The utility can check your disk for bad blocks in various test modes…

Victoria is an experimental program to analyze your HDD, so you can see the health and the performance in detail. It can also perform surface tests.

Hard Disk Sentinel monitors and tests the health of your computer's hard disks.

HDD Regenerator is a software which provides a dual function. It can repair a hard drive and retrieve all lost data.

SpinRite is a computer program for scanning magnetic data storage devices such as hard disks, recovering data from them and refreshing their surfaces.