1World Online is leading in Top 100K Sites and Top 1M Sites.
Zimbio has better usage coverage in more websites categories. Including Arts & Entertainment, People & Society, Music & Audio, Business & Industry and 41 other categories.
1World Online is leading in News & Media, Shopping, Health, Travel and 19 other categories.
Zimbio is leading in most countries, including Russia, United Kingdom, Poland, Canada and 27 other countries.
1World Online is leading in United States, India, Ukraine, Chile and 9 other countries.