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Qzzr is leading in Top 10K Sites.
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civicScience is leading in Top 100K Sites and Top 1M Sites.
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Qzzr has better usage coverage in more websites categories. Including Science & Education, Health, Computers Electronics & Technology, Food & Drink and 15 other categories.
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civicScience is leading in News & Media, Arts & Entertainment, Sports, Pets & Animals and one other category.
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Qzzr is leading in most countries, including France, Canada, Sweden, India and 47 other countries.
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civicScience is leading in United States, Dominican Republic, Egypt and Jordan.