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. Developed by Artem Rubtsov
License: Free
Hard Disk Sentinel offers more advanced monitoring and reporting features, making it suitable for professional use, while HDDScan provides a simpler, free option for basic disk diagnostics. HDDScan's command line interface and basic features cater to users who require less complexity.