Sorry for not seeing this earlier but Dade is right, there is a 2.1 Mac version but all the 2.2 alphas, betas and latest builds are Linux and Windows only.
We hope once 2.2 is final there will be a Mac version too.
Sorry for not seeing this earlier but Dade is right, there is a 2.1 Mac version but all the 2.2 alphas, betas and latest builds are Linux and Windows only.