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 40 other categories.
1World Online is leading in News & Media, Shopping, Health, Travel and 22 other categories.
Zimbio is leading in most countries, including United States, Russia, United Kingdom, Brazil and 32 other countries.
1World Online is leading in India, Mexico, Ukraine, Chile and 4 other countries.