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 News & Media, Arts & Entertainment, Business & Industry, Computer & Electronics and 73 other categories.
Shopzilla is leading in Shopping, People & Society, Clothing, Consumer Electronics and 64 other categories.
Integral Ad Science is leading in most countries, including United States, United Kingdom, France, Poland and 63 other countries.
Shopzilla is leading in Bangladesh, China, Trinidad and Tobago, Serbia and 2 other countries.