openModeller is an ecological niche modelling library, providing a uniform method to model species distribution patterns with a variety of algorithms.

These are the sample environmental datasets provided with the openModeller Desktop Windows installer. For reasons of bandwidth they are currently not packaged with the OS X and Gnu/Linux versions of the software, but can be downloaded separately using the links provided below:

http://openmodeller.cria.org.br/installer_sample_data/crucl2.zip (CRU CL2 Data Layers)

http://openmodeller.cria.org.br/installer_sample_data/hadley2050A1F.zip (Hadley 2050A1F Scenario)

http://openmodeller.cria.org.br/installer_sample_data/SouthAmerica.zip (South Americal present day)

The European Distributed Institute of Taxonomy (EDIT) has also compiled a set of environmental layers as part of their project:

http://edit.csic.es/GISdownloads.html