CLIO is a unified discovery system which provides a single search interface that spans both local information sources such as our Catalog, web site, and Academic Commons as well as remotely hosted services such as the 1.6 billion item Summon article database.

CLIO is built on top of the open-source Blacklight search and discovery engine in use at many peer institutions including Stanford, University of Virginia, University of Wisconsin, and Johns Hopkins University. The underlying technologies powering the search are the open-source search index SOLR and the Ruby on Rails web framework.