BEAST development has moved to GitHub. Write-access is no longer available here and wiki pages will also be moved shortly. - April 25, 2015

BEAST, Bayesian Evolutionary Analysis Sampling Trees, is a cross-platform program for Bayesian analysis of molecular sequences using MCMC. The program is orientated towards (strict and relaxed) molecular clock analyses. It can be used as a method of constructing phylogenies, but it is also intended for testing evolutionary hypotheses without conditioning on a single tree topology. BEAST uses MCMC to average over tree space, so that each tree is weighted proportional to its posterior probability. It uses an XML input format that allows the user to design and run a large range of models. We also include a program that can convert NEXUS files into this format.

Download BEAST

Download BEAST v1.8.1 binaries for Mac, Windows and UNIX/Linux

Older BEAST Downloads

Other Downloads

BEASTGen v1.0.2 .tgz file

BEASTGen v1.0.2 .ZIP file

Documentation

BEAST Documentation Website

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