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, Business & Industry, Music & Audio and 45 other categories.
1World Online is leading in News & Media, Health, Shopping, Technology News and 14 other categories.
Zimbio is leading in most countries, including United States, Great Britain, Canada, Brazil and 40 other countries.
1World Online is leading in Poland, Russia, Ukraine, Venezuela and 9 other countries.