What's the difference between Jetty and Netty?

Question

What is the main difference between Jetty and Netty?

Netty is part of Jboss, but is it the default web server container?

Does Netty support Servlets 3.0?

Answer 1

This is crude simplification, but it allows to understand the difference easily:

Netty is a framework to write TCP applications.

Jetty is a framework to write HTTP applications.