The growing shift to electronic resources has greatly increased access to information, but it also poses many challenges in electronic resources management. Flexible and affordable Electronic Resource Management Systems (ERMS) are needed. Our presentation will focus on the implementation and application of CORAL (Centralized Online Resources Acquisitions and Licensing), an open source ERMS developed at the University of Notre Dame. We will also discuss our experience with CORAL's modules (Resources, Licensing, Organizations, and Usage Statistics), as well as the impact of the ERMS on acquisitions, workflows and staffing at the College of New Jersey Library.