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...
Phusion Passenger - a.k.a. mod_rails or mod_rack - is a web server and application server, designed to be fast, robust and lightweight. Administration tools allow you to gain insight into web application operations and server performance.
Phusion Passenger is leading in Top 10K Sites, Top 100K Sites, Top 1M Sites and The Entire Web.
In terms of market share, Apache Tomcat is clearly lagging behind, losing to Phusion Passenger in all segments.
Phusion Passenger has better usage coverage in more websites categories. Including Computers Electronics & Technology, Business & Consumer Services, Games, Arts & Entertainment and 13 other categories.
Apache Tomcat is leading in Science & Education, Law & Government, Finance, Vehicles and 3 other categories.
Phusion Passenger is leading in most countries, including United States, Canada, United Kingdom, Japan and 128 other countries.
Apache Tomcat is leading in China, South Korea, Brazil, Taiwan and 23 other countries.