SpotX is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
SpotX has better usage coverage in more websites categories. Including Arts & Entertainment, News & Media, Autos & Vehicles, Car Buying and 93 other categories.
Tremor Media is leading in Video Games, Nutrition, Martial Arts, Law & Government and 6 other categories.
SpotX is leading in most countries, including United States, Germany, Netherlands, United Kingdom and 45 other countries.
Tremor Media is leading in Turkey, Ecuador, Ghana, Austria and one other country.