Grails - An Open Source, full stack, web application framework for the JVM
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Vaadin Framework - Vaadin is a web application framework for Rich Internet Applications (RIA).
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
Spring Framework - The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform.
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.