Algolia - Algolia's Search API makes it easy to deliver a great search experience in your apps & websites. Algolia Search provides hosted full-text, numerical, faceted and geolocalized search.

ElasticHQ - Tool for ElasticSearch management and monitoring.

ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.

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

Swiftype Site Search - Swiftype Site Search helps to sell more, get the right answer to more people on the platform and surface relevant content for readers and followers.

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