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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Sortable
2,819 websites

Sortable costs money

http://sortable.com/

Sortable's ad technology works intelligently behind the scenes to optimize your ad impressions so you can focus on creating great content for your audience.

Market Share by Top Websites

1 Sortable 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 Sortable in all segments.

Websites Categories

1 Sortable has better usage coverage in more websites categories. Including Games, Community & Society, Arts & Entertainment, Computers Electronics & Technology and 9 other categories.

2 Centro is leading in Vehicles, Science & Education, Health, Travel & Tourism and 7 other categories.

Geography

1 Sortable is leading in most countries, including United Kingdom, Canada, India, Germany and 70 other countries.

2 Centro is leading in United States, Panama, Azerbaijan, Dominican Republic and one other country.