MAMP is a free, local server environment that can be installed under macOS and Windows with just a few clicks. MAMP provides them with all the tools they need to run WordPress on their desktop PC for testing or development purposes, for example. You can even easily test your projects on mobile devices. It does not matter whether you prefer the web server Apache or Nginx in addition to MySQL as database server, or whether you want to work with PHP, Python, Perl or Ruby. MAMP PRO is the commercial, professional frontend for the classic local server environment: MAMP. With MAMP PRO you can create a separate host for each of your web projects. You can install WordPress and other Extras like Joomla or Drupal with just a few clicks. This is just a small part of what you can do with MAMP PRO.