SearchSpring - SearchSpring is an eCommerce site search tool.
ElasticHQ - Tool for ElasticSearch management and monitoring.
SearchBlox - SearchBlox is an out-of-the-box Enterprise Search Solution built on top of Apache Lucene/Solr.
elasticsearch-gui - AngularJS Client for ElasticSearch as a plugin.
Hulbee Enterprise Search - Hulbee Enterprise Search is another powerful site search solution that intelligently retrieves information and documents regardless of their source or location.
Xapian - Xapian is an open source probabilistic information retrieval library, released under the GNU...