Google Website Optimizer
1,595 websites

Google Website Optimizer is free to use

http://google.com/websiteoptimizer

Website Optimizer is a tool that can help you improve the effectiveness of your website in getting a return on your investment. Page may contain A/B testing.

VS

Next User
71 websites

Next User costs money

https://www.nextuser.com/

Customer lifecycle marketing and personlization system.

Market Share by Top Websites

1 Google Website Optimizer is leading in The Entire Web.

2 Next User is leading in Top 100K Sites and Top 1M Sites.

Websites Categories

1 Google Website Optimizer has better usage coverage in more websites categories. Including Games, Community & Society, Science & Education, Pets & Animals and 20 other categories.

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

Geography

1 Google Website Optimizer is leading in most countries, including United States, United Kingdom, Canada, France and 76 other countries.

2 Next User is leading in Dominican Republic and Ecuador.