Long time Mac user here. One utility that I just can’t live without is Alsoft’s Disk Warrior. I have Drive Genius and MacTools Pro, but neither one “just works” as well as Disk Warrior.
A month or so ago, my wife’s iMac was behaving wonky, so I grabbed my copy of DW and off we go. When it is done, she dutifully removed it from her computer, put the boot DVD in the case and set it on her desk.
Later that afternoon, Tate, our “puppy-like” greyhound grabbed it and ate it. Grrrr. Thought I wouldhave to go groveling to Alsoft for a replacement. But it turns out I used the down rev version, and my version 4.4 is still pristine. Woo hoo!
Good thing too, because I need to clean up my disks on my Mac Book Pro.