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, Pets & Animals, Internet & Telecom and 20 other categories.
SecondPhase is leading in Business & Industry, Construction & Maintenance, Home & Garden, Industrial Goods & Services and 10 other categories.
i-system is leading in most countries, including Poland, Greece, Malaysia, Japan and 7 other countries.
SecondPhase is leading in United States and Canada.