Market Share by Top Websites

1 Nielsen NetRatings is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.

2 In terms of market share, W3Counter is clearly lagging behind, losing to Nielsen NetRatings in all segments.

Websites Categories

1 Nielsen NetRatings has better usage coverage in more websites categories. Including Business & Industry, Arts & Entertainment, News & Media, Marketing & Advertising and 189 other categories.

2 W3Counter is leading in Religion & Spirituality, Business Services, Universities & Colleges, Alternative & Natural Medicine and 16 other categories.


1 Nielsen NetRatings is leading in most countries, including Italy, United States, Australia, Russia and 158 other countries.

2 W3Counter is leading in Iran, Iraq, Tanzania, Uzbekistan and 9 other countries.