Integral Ad Science is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Integral Ad Science has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, News & Media, Business & Industry and 97 other categories.
Shopzilla is leading in Shopping, Clothing, Consumer Electronics, Beauty & Fitness and 44 other categories.
Integral Ad Science is leading in most countries, including United States, France, Brazil, United Kingdom and 82 other countries.
Shopzilla is leading in Trinidad and Tobago and Cameroon.