The goal of this package is to provide commands to compute the Rees algebra of a module as it is defined in the paper What is the Rees algebra of a module?, by Craig Huneke, David Eisenbud and Bernd Ulrich, Proc. Am. Math. Soc. 131, 701--708, 2002. It also includes functions for computing many of the structures that require a Rees algebra. The included functions are listed below. Examples of the use of each of the functions are included with their documentation.