Keyspider.io - Keyspider is a cloud-based search platform that provides the best search experiences for users across your Websites, Ecommerce, Services, and Workplace.
Digizuite DAM - Digizuite DAM is a secure digital asset management system.
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
Algolia Search for WordPress - Bring instant and relevant search to your WordPress blog
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.
SearchWP for Firefox - Jump-to-word buttons and highlighting for the search box content