i-system is leading in Top 100K Sites and Top 1M Sites.
LightHouse has better usage coverage in more websites categories. Including Shopping, Business & Industry, Clothing, Arts & Entertainment and 57 other categories.
i-system is leading in Career & Education, Internet & Telecom, Education, Jobs & Employment and 13 other categories.
LightHouse is leading in most countries, including Netherlands, Germany, Belgium, United States and 33 other countries.
i-system is leading in Poland, Malaysia, Korea Republic, Argentina and 6 other countries.