I’m sure you’ve heard of all the success stories of web developers making careers out of developing WordPress themes. It’s actually not a bad business to be in, especially if you can develop beautiful, useful, responsive WordPress Themes. The problem is, if you’ve never heard of MAMP, then chances are that you are trying to develop your themes on a live site, or you’ve bought and paid for some other type of private testing environment. MAMP is a free application that creates a MySQL database (or as many as you want) and an apache server to simulate live web servers. This is awesome, because now, you can create WordPress themes and immediately test them out, all behind the privacy of your own little server.