Histats
77,118 websites

Histats is free to use

http://www.histats.com/

Histats.com, free web stats and stat counter, hit counter, free web tracker and tracking tools, stats counter.

VS

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...

Market Share by Top Websites

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

2 Histats is leading in Top 1M Sites.

Websites Categories

1 Optimizely has better usage coverage in more websites categories. Including Games, Arts & Entertainment, Computers Electronics & Technology, Vehicles and 18 other categories.

2 Histats is leading in Adult and News & Media.

Geography

1 Optimizely is leading in most countries, including United States, United Kingdom, Canada, Germany and 129 other countries.

2 Histats is leading in Indonesia, China, Italy, Vietnam and 25 other countries.