Found a nifty website that gives all this info in the form of a neat table - http://builtwith.com/
A useful tool to have in the arsenal for any web-master.
Enterprise Architecture, Digital Transformation, SOA, Performance Engineering, Design and Development tips on Java and .NET platforms.
A few years back, we moved to Jboss from Tomcat for our production servers, because there was no viable enterprise support for Tomcat.
Today, we have viable options such as support from Tomitribe.
The below article on Tomitribe gives a good overview of setting up VisualVM for monitoring Tomcat.
Found the below article worth a perusal. We get so used to using sophisticated tools that we forget there are things we can do with a bare JDK :)