Virtual Appliances are nano-sized virtual machines with web user interfaces for deploying instant infrastructure and applications.
Now that I’m using Linux as my laptop, I’ve been using vmware for some testing and whatnot, and I’ve really come to appreciate using virtual machines. This crew is creating mini-VM’s, devoid of everything but the application to run, for the server side. Their tomcat VM weighs in at only 65 Mb. I thought it was specially clever.