Envoy - Visitor registration that's changing how guests are greeted in companies around the world.
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.
TractionGuest - Safe, secure workplace for all.
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
Proxyclick - Connect with Confidence
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.