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.
Webcollage - Webcollage is a SaaS solution enabling brands to manage rich product information and publish it in real time to retailer websites.
Search Grader by Algolia - A free tool to evaluate your product's search experience
Akeneo - Akeneo is an open-source Product Information Management solution.
Webflow Site Search - Design and build custom search for Webflow sites — visually
inRiver - inRiver offers product information management solutions helping B2C and B2B multi-channel commerce tell perfect stories across channels.