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, Social Sciences, Science, Internet & Telecom and 50 other categories.
Open AdExchange is leading in Newspapers, Law & Government, Office Products, Textiles & Nonwovens and 2 other categories.
Double.net is leading in most countries, including Sweden, United States, Niue, United Kingdom and 19 other countries.
Open AdExchange is leading in Denmark and Turkey.