i-system is leading in Top 100K Sites and Top 1M Sites.
i-system has better usage coverage in more websites categories. Including Shopping, Business & Industry, Clothing, Career & Education and 31 other categories.
Litium is leading in Sports, Travel, Social Sciences, Science and 6 other categories.
i-system is leading in most countries, including Poland, Malaysia, Korea Republic, United States and 18 other countries.
Litium is leading in Sweden, Norway, Finland, Denmark and 4 other countries.