Data Lifeguard Diagnostic is described as 'This is a Windows version of the Data LifeGuard Diagnostics. It will test WD internal and external drives. In additional, it can provide you with the model and serial of WD drives attached to the system' and is an app in the System & Hardware category. There are more than 25 alternatives to Data Lifeguard Diagnostic for a variety of platforms, including Mac, Windows, Linux, BSD and PortableApps.com. The best alternative is CrystalDiskInfo, which is both free and Open Source. Other great apps like Data Lifeguard Diagnostic are GSmartControl (Free, Open Source), HD Tune (Freemium), Victoria (Free) and iStat Menus (Paid).
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.
Drive Genius is a hard drive utility that speeds up, cleans up and optimizes your Mac. New Features DrivePulse Monitors the overall health of your Mac hard drive, alerting you to possible issues before they become major problems.