 The Quinmar package provides a comprehensive solution for developing and evaluating ecological niche models. It enables users to select the best parameters for model calibration, create final models based on their significance, performance, and simplicity, and evaluate extrapolation risk in model transfers. Additionally, it reduces the time spent on modeling by allowing multiple parameter sets and model transfers as well as efficient assessment of strict extrapolation risks in model transfers via the MOP and MESS metrics. This article was authored by Marlon E. Cobos, at Townsend Peterson, Naraini Barva, and others.