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.

VS

IBM Websphere Portal Server
1,187 websites

IBM Websphere Portal Server costs money

http://www-03.ibm.com/software/products/en/portalserver

IBM WebSphere Portal Server is the foundation offering of the WebSphere Portal product family, with enterprise portal capabilities that enable consolidation of applications and content into role-based applications, complete with search, per...

Market Share by Top Websites

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

2 In terms of market share, IBM Websphere Portal Server is clearly lagging behind, losing to EPiServer in all segments.

Websites Categories

1 EPiServer has better usage coverage in more websites categories. Including Finance, Health, Heavy Industry & Engineering, Science & Education and 20 other categories.

2 IBM Websphere Portal Server hasn't got a lead over EPiServer in any websites category.

Geography

1 EPiServer is leading in most countries, including United States, Sweden, Norway, United Kingdom and 108 other countries.

2 IBM Websphere Portal Server is leading in China, Japan, South Korea, Hong Kong and 6 other countries.