AdBuyer.com is leading in Top 1M Sites.
AdBuyer.com has better usage coverage in more websites categories. Including Shopping, Business & Industry, Career & Education, Arts & Entertainment and 59 other categories.
Open AdExchange is leading in News & Media, Real Estate, Law & Government, Visual Arts & Design and 5 other categories.
AdBuyer.com is leading in most countries, including United States, Israel, France, Canada and 17 other countries.
Open AdExchange is leading in Denmark, United Kingdom, Sweden and Australia.