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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Optify
42 websites

Optify offers both free and paid options

http://www.optify.net/

Optify provides an indispensable demand generation solution for sophisticated B2B marketers. Optify helps you generate more high quality inbound leads, nurture more demand from your existing leads, and track the impact of all of your market...

Market Share by Top Websites

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

Websites Categories

1 Acerno has better usage coverage in more websites categories. Including Computers Electronics & Technology, Lifestyle, Gambling, Health and 14 other categories.

2 Optify is leading in Home & Garden, Law & Government, Jobs & Career and Reference Materials.

Geography

1 Acerno is leading in most countries, including United States, United Kingdom, Italy, Spain and 24 other countries.

2 Optify is leading in Serbia, Bangladesh, China, South Korea and one other country.