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.
Optimizely - A/B testing you'll actually use.
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
Convert Experiences - Explore the different plans Convert Experiences offers. Understand why we are a compelling optimizely alternative. There’s something for every business and industry.
Coveo - Enterprise search technology for better customer support, customer self-service, and knowledge management in the digital workplace.
SiteGainer - SiteGainer is an A/B testing and conversion optimization platform.