The time is ripe for lightweight AND enterprise class Java application servers, and Apache Tomcat is the pick of the litter. And now, with SpringSource tc Server, we at SpringSource make it a reality.
If you were familiar with Covalent, and now SpringSource, then you most likely know about ERS (Enterprise Ready Server). ERS is our pre-built, pre-packaged and fully QA-ed distribution of the Apache httpd web server and Apache Tomcat. Included in the distro are also some very useful enhancements, in the form of modules, for Apache, such as PHP, mod_perl and mod_snmp. The somewhat unfortunate aspect of the distro is that, except for mod_jk, the added, extra bits to the Tomcat side were pretty minimal.