I guess it may not be that well known or just an assumption, but VMware Tools does in fact exists for Mac OS X guests and it is also documented in the VMware Tools installation guide. A comment that came up yesterday on Twitter was that VMware Tools did not exists for Mac OS X guests and this would make it difficult to manage Mac OS X guests on vSphere. To do so, you would need to be run ESXi on Apple hardware either the now deprecated Apple XServe 3.1 or an Apple Mac Pro. With the release of vSphere 5, virtualizing Apple Mac OS X as a guest OS was possible and fully supported from VMware.
