Market Share by Top Websites

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

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

Websites Categories

1 Optimizely has better usage coverage in more websites categories. Including Computers Electronics & Technology, Finance, Business & Consumer Services, Lifestyle and 17 other categories.

2 Nielsen NetRatings is leading in Games, Arts & Entertainment and News & Media.

Geography

1 Optimizely is leading in most countries, including United States, United Kingdom, Russia, Canada and 144 other countries.

2 Nielsen NetRatings is leading in Italy, Bahamas, Macao, Guam and one other country.