Optimizely
162,903 websites

Optimizely offers both free and paid options

http://www.optimizely.com/

Simple, fast, and powerful. Optimizely is a dramatically easier way for you to improve your website through A/B testing. Create an experiment in minutes with our easy-to-use visual interface with absolutely no coding or engineering required...

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Piwik
339,453 websites

Piwik offers both free and paid options

http://piwik.org

Piwik is an open source analytics platform currently used by individuals, companies and governments all over the world. With Piwik, your data will always be yours. Learn why Piwik is the right web analytics tool for you below.

Market Share by Top Websites

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

2 Optimizely is leading in Top 10K Sites.

Websites Categories

1 Piwik has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Law & Government, Health and 16 other categories.

2 Optimizely is leading in Games, Arts & Entertainment, Vehicles and Pets & Animals.

Geography

1 Piwik is leading in most countries, including Germany, France, Japan, Italy and 144 other countries.

2 Optimizely is leading in United States, Australia, Philippines, New Zealand and 11 other countries.