Klevu - Klevu offers instant site search solution for eCommerce stores.
Calendly - Say goodbye to phone and email tag for finding the perfect meeting time with Calendly. It's 100% free, super easy to use and you'll love our customer service.
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.
Acuity Scheduling - Automate your client bookings, cancellations, reminders & payments using the worlds friendliest online scheduling software.
Google Custom Search - Google Custom Search enables you to create a search engine for your website, your blog, or a collection of websites.
Doodle - Make meetings happen. With Doodle, scheduling becomes quick and easy.