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.
Travefy - The easiest online and mobile group travel planner!
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
ClientBase - Travel Agency
Site Search 360 - Site Search 360 enhances and improves your built-in CMS or product search with autocompletion, semantic search, filters, facets, detailed analytics, and a whole lot of customization options.
Unit4 for Travel - Gain efficiency, live change and increase profitability with end-to-end ERP for travel management companies. Learn more about Unit4 for Travel.