Quigo AdSonar is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.
Shopzilla has better usage coverage in more websites categories. Including Shopping, Business & Industry, Clothing, Consumer Electronics and 83 other categories.
Quigo AdSonar is leading in People & Society, News & Media, Arts & Entertainment, Religion & Spirituality and 58 other categories.
Quigo AdSonar is leading in most countries, including United States, Germany, Canada, Iran and 34 other countries.
Shopzilla is leading in India, Russia, United Kingdom, Viet Nam and 13 other countries.