Libraries have begun a transformation from physical materials to electronic media, and the so-called next-generation catalog is emerging before our eyes. This issue of Library Technology Reports analyzes five different academic libraries to better understand their investments, detailing the outcome thus far and drawing conclusions about the next-generation catalog. Topics Include: Defining the Next-Generation Catalog: Open Source versus Commercial SolutionsDeploying the Next-Generation ServiceUnderstanding the Impact Case Studies (Wake Forest University , Oklahoma State University, North Carolina State University, University of Tennessee at Knoxville, and Villanova University)