GroupThinq - Cloud-based software application for consulting firms (and students) with all the tools required in...

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

Avenue right - Avenue right is a media buying and digital advertising platform that helps businesses make better decisions with the right advertising.

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

Quantcast - Quantcast Corporation is a digital marketing company that provides free audience demographics measurement and delivers real-time advertising.

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