There are many alternatives to GSmartControl for Mac if you are looking for a replacement. The best Mac alternative is smartmontools, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to GSmartControl and five of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to GSmartControl are DriveDx (Paid), SMART Utility (Paid), SMARTReporter (Paid) and Drive Scope (Paid).
The smartmontools package contains two utility programs (smartctl and smartd) to control and monitor storage systems using the Self-Monitoring, Analysis and Reporting Technology System (SMART) built into most modern ATA and SCSI harddisks.
SMARTReporter is an application that can warn you of some hard disk drive failures before they actually happen! It does so by periodically polling the built-in S.M.A.R.T. status of your hard disk drives as well as performing other checks for "I/O errors" or R.A.I.
Hard drives (and solid state drives) are the most failure prone components in your Mac. For that very reason, in fact, drive manufacturers have built in self monitoring, analysis and reporting technology right into the drive. (a.k.a.