SpotX is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Undertone Networks has better usage coverage in more websites categories. Including People & Society, Business & Industry, Shopping, Religion & Spirituality and 53 other categories.
SpotX is leading in Arts & Entertainment, News & Media, Autos & Vehicles, Car Buying and 52 other categories.
SpotX is leading in most countries, including Netherlands, Germany, Spain, United Kingdom and 38 other countries.
Undertone Networks is leading in United States, Japan, France, Australia and 9 other countries.