1World Online is leading in Top 10K Sites, 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 45 other categories.
1World Online is leading in News & Media, Health, Sports, Clothing and 14 other categories.
Zimbio is leading in most countries, including United States, United Kingdom, Sweden, France and 31 other countries.
1World Online is leading in India, Russia, Ukraine, Venezuela and 7 other countries.