Spring Framework - The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications - on any kind of deployment platform.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
Apache Struts - Apache Struts is an open-source web application framework for developing Java EE web applications.
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
Spark Mail - Spark helps you take your inbox under control. Instantly see what’s important and quickly clean up the rest. Spark for Teams allows you to create, discuss, and share email with your colleagues
LiteSpeed Web Server - LiteSpeed Web Server (LSWS) is a high-performance Apache drop-in replacement.