Open Source
http://projectblacklight.org/

Blacklight is a free and open source Ruby on Rails based discovery interface (a.k.a. “next-generation catalog”) especially optimized for heterogeneous collections. You can use it as a library catalog, as a front end for a digital repository, or as a single-search interface to aggregate digital content that would otherwise be siloed.

Blacklight uses Apache Solr


, an enterprise-scale index for its search engine. Blacklight features faceted browsing, relevance based searching (with the ability to locally control the relevancy algorithms), bookmarkable items, permanent URLs for every item, user tagging of items.

Please see the 'Discovery - Who uses what systems' section for an updated list.

• University of Hull: http://blacklight.hull.ac.uk/__
  Article of Hulls Implementation of Blacklight: "Blacklight: a next-generation discovery interface.“ By Chris Awre, Head of Information Management, & Diane Leeson, Content and Access Team Leader, Information Management, Library and Learning Innovation, University of Hull
  IN Catalogue and Index.Periodical of the Chartered Institute of Library and Information Professionals (CILIP) Cataloguing and Indexing Group
  March 2013, Issue 170
  
  ===== External Links ===== * Blacklight blog: http://projectblacklight.org/blog.html * Blacklight wiki: https://github.com/projectblacklight/blacklight/wiki * Bibliographic Wilderness Blog (Jonathan Rochkind - JohnHopkins Uni): http://bibwild.wordpress.com/?s=blacklight