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, Sports and 97 other categories.
Tremor Media is leading in Video Games, Nutrition, Law & Government, Martial Arts and 5 other categories.
SpotX is leading in most countries, including United States, Germany, Netherlands, Spain and 43 other countries.
Tremor Media is leading in China, Croatia, Ghana, New Zealand and 2 other countries.