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

Improvely
1,548 websites

Improvely offers both free and paid options

https://www.improvely.com/

Conversion tracking, click fraud monitoring and A/B testing for online marketers and agencies.

Market Share by Top Websites

1 Improvely is leading in Top 10K Sites, Top 100K Sites and Top 1M Sites.

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

Websites Categories

1 Google Website Optimizer has better usage coverage in more websites categories. Including Games, Community & Society, Science & Education, Pets & Animals and 11 other categories.

2 Improvely is leading in Computers Electronics & Technology, Business & Consumer Services, Health, Lifestyle and 4 other categories.

Geography

1 Improvely is leading in most countries, including United States, United Kingdom, India, Canada and 68 other countries.

2 Google Website Optimizer is leading in Russia, Italy, Japan, Romania and 26 other countries.