Competitor Benchmarking: Traffic Estimation Tools - Alexa Alternatives

SEMrush.com

Alexa provides information about websites including Top Sites,
Internet Traffic Stats and Metrics, Related Links, Online Reviews Contact Information
and Search Analytics for SEM and SEO optimization. The Alexa Toolbar is a browser add-on
that shows data about sites as you surf the web

Quantcast enables you to buy and sell targeted audiences in real time, and allows advertisers to view free audience reports on millions of web properties.

Drive your search marketing, business development, media planning and competitive strategy with the most powerful data on the planet.

Explore the most important traffic insights for any website to improve your market research, competitive analysis and business development.