DiskWarrior - DiskWarrior, the world's most advanced and highest rated hard disk, hard drive, and disk repair and data recovery tool for macOS, OS X and Mac OS X.
MHDD - MHDD is the most popular freeware program for low-level HDD diagnostics.
Data Rescue - When Apple's system recovery fails, recover any and all files with Data Rescue 3. This data rescue software will even work if your Mac's hard drive fails to mount.
CrystalDiskInfo - CrystalDiskInfo. A HDD/SSD utility software which supports a part of USB connection and Intel RAID. >> Download. Intel RAID (IRST). IRST 11.
DriveDx - DriveDx is advanced drive health diagnostic and monitoring utility.
Acronis Drive Monitor - Acronis provides online backup, disaster recovery and data protection, Internet security, spyware removal, partition manager programs.