Klevu - Klevu offers instant site search solution for eCommerce stores.
Looker - Looker makes it easy for analysts to create and curate custom data experiences—so everyone in the business can explore the data that matters to them, in the context that makes it truly meaningful.
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.
SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.
Google Custom Search - Google Custom Search enables you to create a search engine for your website, your blog, or a collection of websites.
HubSpot Marketing Hub - HubSpot is a cloud-based inbound marketing software that allows businesses to transform the way that they market online.