Free convolution reverb plug in for mac?

Yeah there is only like the Sonic Birth stuff, a guy on here made a free one using the Sonic Birth coding. I'm not sure it if it worked or not, I meant to try it out but never had time and now I don't feel like searching through a billion threads about convolution reverbs or impulses to find it, lol. I've realized that even though Macs are generally the industry standard for audio production there are more people making free plug-ins for PC. It's only because more people can afford PCs and thats what they have starting off, I think anyway. So I guess it makes sense to make your free plugs to a market that is much larger...but I'm feeling left out. I've decided to just break down and buy SIR2+ReValver HP or just buy the full ReValver MKIII which has a good impulse plug in it.

~006