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.
321Soft Data Recovery for Mac - The ultimate Mac Data Recovery software with RAID supported.
Acronis Drive Monitor - Acronis provides online backup, disaster recovery and data protection, Internet security, spyware removal, partition manager programs.
iBoysoft Data Recovery - iBoysoft Data Recovery for Windows serves as advanced data recovery software to assist users in file recovery from Recycle Bin, BitLocker-secured drives, RAW partitions, corrupted or formatted drives, deleted or lost partitions, etc. on Windows.