Centro
1,020 websites

Centro is free to use

http://www.centro.net

Centro is a digital media services and technology company. Founded in 2001 and headquartered in Chicago with 17 offices nationwide, Centro serves over 350 agencies representing more than 1,100 advertisers. Centro’s commitment to culture, ...

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Conversant Ad Server
1,850 websites

Conversant Ad Server costs money

http://www.conversantmedia.com/mediaplex/

The Conversant Ad Server helps advertisers deliver across channels, with a dedicated team and full-service support.

Market Share by Top Websites

1 Conversant Ad Server is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, Centro is clearly lagging behind, losing to Conversant Ad Server in all segments.

Websites Categories

1 Conversant Ad Server has better usage coverage in more websites categories. Including Computers Electronics & Technology, Arts & Entertainment, Games, Science & Education and 16 other categories.

2 Centro is leading in Vehicles, Health, Pets & Animals and Jobs & Career.

Geography

1 Conversant Ad Server is leading in most countries, including United Kingdom, France, Italy, China and 86 other countries.

2 Centro is leading in United States, Azerbaijan, Kenya, Kyrgyzstan and one other country.