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.

SearchTap.io - SearchTap is a search technology that can easily integrate with websites and mobile apps to provide an Amazon-like search experience without writing any code. It solves search problems for websites, businesses, mobile apps and enterprise software.

Kaizen - Kaizen is an ElasticSearch GUI for Windows, Mac and Linux, written in JavaFX as a cross-platform desktop application.

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

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