I'm necro-ing this thread to add my name to the list of users who would love a Mac version of Kabuto.
I've been doing more and more Mac work over the last year, and it seems that since Windows 10 was released, more and more of my users are abandoning the Windows ship in favor of "smoother sailing" with Mac.
I think that to start Kabuto for Mac could be just the branded advertising/pop-up utility that alerts users to basic issues (drive errors, low disk space, app crashes) and gives them an easy way to contact us. Who knows what that could grow into.