When it comes to Java application server comparisons, there isn’t a starker contrast between two offerings than Apache Tomcat and IBM WebSphere. Right off the bat, let’s clear up some disambiguation.

IBM's WebSphere application server takes top honors in a recent study from Evans Data. The Evans study tracked user ratings and pit WebSphere against application servers from Oracle, JBoss ...

The resulting product (now in Version 4.2.2) is an add-on to its WebSphere Application Server, which is still leveraged for its execution and clustering capabilities.

Developers ranked IBM WebSphere, the open-source Apache Geronimo and Windows Server among their favorite options, according to a free report distributed by Evans Data (free registration required).