SpotX is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
SpotX has better usage coverage in more websites categories. Including News & Media, Arts & Entertainment, Autos & Vehicles, Car Buying and 64 other categories.
Undertone Networks is leading in People & Society, Shopping, Business & Industry, Religion & Spirituality and 53 other categories.
SpotX is leading in most countries, including United States, Germany, Netherlands, Spain and 39 other countries.
Undertone Networks is leading in Canada, Poland, China, Turkey and 8 other countries.