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, Unica 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 195 other categories.

2 Unica is leading in Car Buying, Medicine, Insurance, Banking and 5 other categories.


1 Nielsen NetRatings is leading in most countries, including Italy, United States, Australia, Spain and 170 other countries.

2 Unica is leading in Saint Vincent And The Grenadines, Oman, Bhutan, Mauritania and 2 other countries.