 The Quenmar package provides a set of tools for detailed development of ecological niche models using MaxENT, enabling rigorous calibration, selection, creation, evaluation, and extrapolation risk analysis. Best parameters are selected based on statistical significance, predictive power, and model complexity, while multiple parameter sets and model transfers are enabled for final models. The MOP metric is used to evaluate extrapolation risks in model transfers. This article was authored by Marlon E. Cobos, A Townsend Peterson, Naraini Barve, and others.