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 46 other categories.
1World Online is leading in News & Media, Shopping, Health, Clothing and 13 other categories.
Zimbio is leading in most countries, including United States, United Kingdom, Canada, Brazil and 44 other countries.
1World Online is leading in Poland, Ukraine, Russia, Venezuela and 15 other countries.