Does cloud9 give access to more than one external port with their paid plan? I know that free plan only has one but i am wondering about the paid one.
EDIT: Workspaces now have 3 external ports, released a few days ago but not yet documented.
They have 8080 (the default), 8081 and 8082. To access them simply append the port number to your preview url (eg. http://projectname-username.c9.io:8081) and it will connect to whatever is running on port 8081.
These ports have some small issues with https which we'll improve over the next few days but http works fine.
Source: I work for Cloud9