i-system is leading in Top 100K Sites and Top 1M Sites.
i-system has better usage coverage in more websites categories. Including Shopping, Clothing, Career & Education, Education and 27 other categories.
SecondPhase is leading in Business & Industry, Construction & Maintenance, Home & Garden, Industrial Goods & Services and 8 other categories.
i-system is leading in most countries, including Poland, Greece, Russia, Malaysia and 15 other countries.
SecondPhase is leading in United States, Canada, Tanzania and Gambia.