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 Despite its recent growth, Woopra is still behind Nielsen NetRatings in all market share segments.

Websites Categories

1 Nielsen NetRatings has better usage coverage in more websites categories. Including Business & Industry, Marketing & Advertising, Arts & Entertainment, Food & Drink and 129 other categories.

2 Woopra is leading in Internet & Telecom, Computer & Electronics, Photography, Software and 85 other categories.


1 Woopra is leading in most countries, including United States, Brazil, United Kingdom, Japan and 99 other countries.

2 Nielsen NetRatings is leading in Italy, Australia, Spain, Bulgaria and 63 other countries.