HabMod: Habitat Modeling Toolbox
Formerly called ArcRstats, this toolbox produces multivariate habitat prediction rasters using ArcGIS and the open-source R statistical package for implementing classification and regression (CART), generalized linear models (GLM) and generalized additive models (GAM). Most of this functionality has now been incorporated into MGET, and all future development will occur there. We recommend you download MGET instead, unless you already use ArcRstats or HabMod and need to obtain another copy.
The link address is: http://www.env.duke.edu/geospatial/software