The University of Michigan Library's web site is a consistent, integrated front end on what was a collection of 19 distinctly different library sites and multiple library silos. The library's site now combines a variety of tools (including Drupal, VuFind, Springshare's LibGuides, Ex Libris's Metalib, DSpace, and Solr) within a single interface. In this talk, you will learn about the design process that informed the system architecture and the way we are using data from both open source and proprietary software to break down information silos. Presented at WiLSWOrld 2010 in Madison, Wisonsin