Statista - The Statistics Portal for Market Data, Market Research and Market Studies

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

Statwing - Simply upload your spreadsheet or dataset, then select the relationships you want to explore. Statwing was built by and for analysts, so you can clean data, explore relationships, and create charts in minutes instead of hours.

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

datarobot - Become an AI-Driven Enterprise with Automated Machine Learning

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