SEMRush - All-in-one Marketing Toolkit for digital marketing professionals.

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

Looker - Looker makes it easy for analysts to create and curate custom data experiences—so everyone in the business can explore the data that matters to them, in the context that makes it truly meaningful.

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

HubSpot Marketing Hub - HubSpot is a cloud-based inbound marketing software that allows businesses to transform the way that they market online.

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