The document discusses the eXtensible Catalog Drupal Toolkit, which allows libraries to take control of their website and metadata. It provides a single user interface for an integrated library system, digital repository, library web content, and subscribed content. The toolkit uses Drupal modules and themes to connect different elements like an OAI-PMH harvester, metadata records, and a Solr index. It can schedule harvests and provides documentation and credits the contributors.