Use this site to download Maxent software for modeling species niches and distributions by applying a machine-learning technique called maximum entropy modeling. From a set of environmental (e.g., climatic) grids and georeferenced occurrence localities, the model expresses a probability distribution where each grid cell has a predicted suitability of conditions for the species. Under particular assumptions about the input data and biological sampling efforts that led to occurrence records, the output can be interpreted as predicted probability of presence (cloglog transform), or as predicted local abundance (raw exponential output).

Here you can download the open-source release of Maxent (under an MIT license; suggested citation below). See below for key changes in the current version.

The idea for Maxent was first conceived of here at the Center for Biodiversity and Conservation at the American Museum of Natural History (AMNH) through a public-private partnership between the AMNH and AT&T-Research. Steven Phillips and the other developers of Maxent are still engaged in its development and maintenance, and the Google group will remain the main mechanism for user questions. Much additional information can be found in the Google group, software tutorials, and other resources listed below.

Main changes in Version 3.4.1

  • Minor bug fixes to the 3.4.0 release

Main changes in Version 3.4.0

  • Released under a MIT license**
  • Threshold features are now turned off by default
  • A cloglog transform has been added and now constitutes the default transformation for model output (formerly the logistic transform)

See you in here to download Maxent Application!