HomestayDNN - HomestayDNN is an Airbnb clone script.
Klevu - Klevu offers instant site search solution for eCommerce stores.
Miles - Create lasting habits
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.
Hotelchamp - Hotelchamp offers personalization solutions for hotel websites to boost direct bookings and build guest relations.
Google Custom Search - Google Custom Search enables you to create a search engine for your website, your blog, or a collection of websites.