freeXmedia is leading in Top 100K Sites and Top 1M Sites.
freeXmedia has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, Sports, Autos & Vehicles and 33 other categories.
Open AdExchange is leading in Shopping, People & Society, Marketing & Advertising, News & Media and 21 other categories.
freeXmedia is leading in most countries, including Germany, United States, Switzerland, Russia and 3 other countries.
Open AdExchange is leading in Denmark, United Kingdom, Sweden, Peru and one other country.