EPiServer
6,459 websites

EPiServer costs money

http://www.episerver.com

EPiServer CMS is a fast, flexible and robust Web Content Management system that is used by thousands of organizations and companies around the world for managing their Web sites and intranets.

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Tumblr
386,778 websites

Tumblr is free to use

http://tumblr.com

Tumblr is a re-envisioning of tumblelogging, a subset of blogging that uses quick, mixed-media posts. The service hopes to do for the tumblelog what services like LiveJournal and Blogger did for the blog. The difference is that its extreme ...

Market Share by Top Websites

1 Tumblr is leading in Top 1M Sites and The Entire Web.

2 EPiServer is leading in Top 10K Sites and Top 100K Sites.

Websites Categories

1 Tumblr has better usage coverage in more websites categories. Including Arts & Entertainment, Adult, Games, Lifestyle and 18 other categories.

2 EPiServer is leading in Finance and Heavy Industry & Engineering.

Geography

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

2 EPiServer is leading in Sweden, Norway, Afghanistan and Jersey.