Older versions of Mac OS had Java installed by default but this is no longer the case. To run BEAST on Mac OS X, you will need to have Java installed. The latest version of BEAST can always be found here: Installing JAVA Phylogeographic Diffusion in Continuous Space, WNV.Phylogeographic Diffusion in Continuous Space, YFV.Phylogeographic Diffusion in Discrete Space.Analysing datasets with tens of thousands of taxa.Phylogeography with individual travel history.Hierarchical Phylogenetic Model Tutorial.