Ad Butler
396 websites

Ad Butler is free to use

http://www.adbutler.com/

Ad Butler offers banner rotation and advertising management software.

VS

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, ...

Market Share by Top Websites

1 Centro is leading in Top 1M Sites.

2 Ad Butler is leading in Top 10K Sites and Top 100K Sites.

Websites Categories

1 Centro has better usage coverage in more websites categories. Including Vehicles, Science & Education, Sports, Health and 13 other categories.

2 Ad Butler is leading in News & Media, Computers Electronics & Technology, Adult and E-commerce & Shopping.

Geography

1 Ad Butler is leading in most countries, including India, United Kingdom, Russia, Germany and 39 other countries.

2 Centro is leading in United States, Brazil, Australia, Philippines and 12 other countries.