Apache Tomcat
49,024 websites

Apache Tomcat is free to use

http://tomcat.apache.org/

The Apache Tomcat software is an open source implementation of the Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket technologies. The Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket spe...

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IBM Websphere Application Server
147 websites

IBM Websphere Application Server costs money

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

Build, deploy and manage robust, agile and reusable SOA business applications and services of all types while reducing application infrastructure costs with IBM WebSphere Application Server.

Market Share by Top Websites

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

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

Websites Categories

1 Apache Tomcat has better usage coverage in more websites categories. Including Science & Education, Computers Electronics & Technology, Law & Government, Finance and 20 other categories.

2 IBM Websphere Application Server hasn't got a lead over Apache Tomcat in any websites category.

Geography

1 Apache Tomcat is leading in most countries, including China, United States, South Korea, France and 147 other countries.

2 IBM Websphere Application Server hasn't got a lead over Apache Tomcat in any country.