ACDSee - ACDSee is an image viewer that uses very little system resources, and it has a small, sleek size that won't take up much space on your system.
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.
digiKam - Professional Photo Management with the Power of Open Source
Hawk Search - Site-search engine for eCommerce platforms.
Flickr - image and video hosting website
Reflektion - Reflektion provides a predictive analytics platform that is easily deployable solutions for retailers and brands.