Double.net is leading in Top 100K Sites and Top 1M Sites.
Double.net has better usage coverage in more websites categories. Including Business & Industry, Science, Social Sciences, Arts & Entertainment and 60 other categories.
Simple AdServer is leading in Web Hosting.
Double.net is leading in most countries, including Sweden, United States, United Kingdom, Russia and 26 other countries.
Simple AdServer hasn't got a lead over Double.net in any country.