Stripe - Online payment processing for internet businesses. Stripe is a suite of payment APIs that powers commerce for online businesses of all sizes. Use Stripe’s payment platform to accept and process payments online for easy-to-use commerce solutions.

Q-Stats - Get free marketing insights for every question on Quora.

CartHero - Recover abandoned checkouts with SMS, discounts, and customer service

Site Rank Data - View historical rank information of websites via time series charts.

Checkout Page - Sell on your site with customizable checkouts. Tailor-made one page checkouts to sell digital products & services without an ecommerce store.

Seoxan - check seo report for any website, alexa ranking, server information, meta tags, authority, page speed and more