title: Tomcat port 80 doesn't work
body: <p>Using Eclipse, I set up Tomcat Server 7 but seems another application is using the port 80? I got this message from the Tomcat Server:</p>
  
  <blockquote>
    <p>Port 80 required by Tomcat v7.0 Server at localhost is already in use. The server may already be running in another process, or a system process may be using the port. To start this server you will need to stop the other process or change the port number(s)</p>
  </blockquote>
  
  <p>How do I close anything on the port 80 on Mac OS X ?</p>