Klevu - Klevu offers instant site search solution for eCommerce stores.
Toggl - Toggl is an online time tracking tool. It features 1-click time tracking and helps you see where your time goes. Free and paid versions are available.
Google Custom Search - Google Custom Search enables you to create a search engine for your website, your blog, or a collection of websites.
Harvest - Simple time tracking, fast online invoicing, and powerful reporting software. Simplify employee timesheets and billing. Get started for free.
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.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.