CommVault - Commvault is a site search platform that helps legal or compliance officers and corresponding end users to explore and retrieve files and email across different applications, storage devices and computers.

ElasticHQ - Tool for ElasticSearch management and monitoring.

Hulbee Enterprise Search - Hulbee Enterprise Search is another powerful site search solution that intelligently retrieves information and documents regardless of their source or location.

elasticsearch-gui - AngularJS Client for ElasticSearch as a plugin.

SearchBlox - SearchBlox is an out-of-the-box Enterprise Search Solution built on top of Apache Lucene/Solr.

Xapian - Xapian is an open source probabilistic information retrieval library, released under the GNU...