Market Share by Top Websites

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

2 In terms of market share, Google Website Optimizer is clearly lagging behind, losing to VWO in all segments.

Websites Categories

1 VWO has better usage coverage in more websites categories. Including Computers Electronics & Technology, Business & Consumer Services, Finance, Health and 20 other categories.

2 Google Website Optimizer hasn't got a lead over VWO in any websites category.


1 VWO is leading in most countries, including United States, United Kingdom, Netherlands, Canada and 147 other countries.

2 Google Website Optimizer is leading in Mali.