Jetty Launcher - an Eclipse plugin

Jetty is a 100% Java HTTP Server and Servlet Container, check it out!

JettyLauncher is, as the title suggests, a plug-in that adds support for running web application in Jetty to the Eclipse platform.

There are some Features of jetty launcher are following here:

Run and Debug Java Web applications directly within the Eclipse workbench (without the need to export a war file).
Get apps running quickly using built in configuration options; or
Retain complete control of your Jetty environment by using Jetty XML configurations
Support includes Jetty 5 and JettyPlus
Optional 3rd Party plug-in intergration makes it easy to profile your web applications.

if you want to know detail about the jetty launcher then click this link.