Drive Manager is described as 'Has been written to help you easily identify drives which are of the same type. As well as displaying the volume label it also displays vendor information so that multiply CD/DVD drives and removable drives such as USB thumb drives can be differentiated by their' and is an app. There are 1 alternatives to Drive Manager for Mac. The best Drive Manager alternative is ZetaWatch, which is both free and Open Source.
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.
