SSD-Z is not available for Mac but there are some alternatives that runs on macOS with similar functionality. The best Mac alternative is iStat Menus. It's not free, so if you're looking for a free alternative, you could try Stats or eul. If that doesn't suit you, our users have ranked more than 10 alternatives to SSD-Z and nine of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to SSD-Z are Stats Panel (Free), ZetaWatch (Free, Open Source), SSD Fan Control (Free) and RunCat (Free).
iStat is a series of system monitor apps. It's available in different versions: iStat Menus, iStat for iOS and iStat Server as a companion application to the iStat for iOS app that lets you remotely monitor your computers (free for Windows and Mac).
ZetaWatch is a small OS X program that displays the zfs status in the menu bar, similar to what iStat Menus does for other information. It is fairly well tested, but due to the current state of libzfs and libzfs_core, changes will be required until the API stabilizes.
iMac users who tweak their systems using 3rd party hard disks or solid state disks, are often surprised by an unpleasant aftermath: an annoyingly noisy hard disk fan. Fan management in Apple systems relies on temperatures reported by the SMC system.
SSDReporter is an application that checks the health of your internal solid state drives ("SSD" aka "Flash Storage"). Since SSDs have a limited life-time determined by the number of write operations, it is important to keep an eye on your SSD status.