与其他Web服务器一起运行Apache？

Has anyone had any success running two different web servers -- such as Apache and CherryPy -- alongside each other on the same machine? I am experimenting with other web servers right now, and I'd like to see if I can do my experiments while keeping my other sites up and running. You could say that this isn't so much a specific-software question as it is a general networking question.Has anyone had any success running two differen