IdealPath - IdealPath is extremely easy to use landing page creator built for small business owners.
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.
SendGrid - Learn why more developers choose SendGrid for their email deliverability service to send transactional emails triggered by web apps. Get started for free
ElasticSearch - Elasticsearch is an open source, distributed, RESTful search engine.
Constant Contact - Constant Contact offers email marketing, social media marketing, online survey, event marketing, digital storefronts, and local deals tools.
Google Custom Search - Google Custom Search enables you to create a search engine for your website, your blog, or a collection of websites.