The world is converging into Java technologies now. The Java Application Server is the buzz word in the Web Designing world and it has been successful all these years in providing secure and reliable services online. The main interface behind the Java Application server is the Apache Tomcat which maintains the relation between all the web pages. All the sessions, memory management are also looked after by Apache. An application server is a tool where the website can be hosted. It takes care of co-ordination of the web-pages that has been programmed in any language. It can launch any web page that can be written using a language that supports web interface. Be it ASP .NET or Java or PHP anything needs and Application Server to launch the web pages. The best part is Java built technologies are open source and so easy to download and use. The support available for development is also awesome.