Acerno
204 websites

Acerno is free to use

http://www.adroitds.com/

aCerno is an e-commerce advertisement cooperative that uses anonymous consumer shopping data from product manufacturers and retailers to identify consumers and their desired products and services.

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HitTail
668 websites

HitTail offers both free and paid options

http://www.hittail.com/

HitTail is a search intelligence product that reveals in real-time the under performing, most promising keywords hidden in the long tail of natural search results. These terms are presented as suggestions that can boost the natural search r...

Market Share by Top Websites

1 HitTail is leading in The Entire Web.

2 Acerno is leading in Top 100K Sites and Top 1M Sites.

Websites Categories

1 HitTail has better usage coverage in more websites categories. Including Business & Consumer Services, Computers Electronics & Technology, Community & Society, Finance and 17 other categories.

2 Acerno is leading in Gambling, Sports and Vehicles.

Geography

1 HitTail is leading in most countries, including United States, India, Italy, France and 49 other countries.

2 Acerno is leading in United Kingdom, Spain, Argentina, Portugal and 7 other countries.