Put simply, our Mometrix eLibrary delivers the most comprehensive list of study guides and practice questions on the market, all at your fingertips. Mometrix eLibrary is a cloud-based web application that gives your organization access to our entire database of test preparation materials. Students can access these study materials anywhere, anytime they have an internet connection. We deliver the most comprehensive, most effective collection of study guides and practice questions on the market, all in one place.