Xerxes is an open source library portal application used by over 40 institutions around the world. It's highly customizable, provides sophisticated citation management and integration features, and is mobile-ready.

Xerxes 1.8

The current version is Xerxes 1.8. It can serve as an improved interface to the Metalib federated search system.

Xerxes 2.0

Version 2 is current being developed on Github. It can serve as the user interface to a number of other discovery systems besides Metalib, including Solr, Summon, Primo Central, Ebsco Discovery, and Worldcat.