We just uploaded the first beta version of the Brick Daemon and Brick Viewer for Mac OS X. All of our products should now be usable on this platform too! Only recent versions of the operating system are supported (64 bit system, x86).
The development took quite a bit longer then we expected, some of the libraries we use have different behavior on Mac OS X than on Linux or Windows. This is aggravated by the fact that we are both no Mac OS X experts. Thus we are declaring the Mac OS X support as beta currently, if you encounter any problems please let us know.