MAMP

MAMP creates a virtual Apache server directly on your Mac. Using it, you can prototype, build and theme a Drupal site quickly on your local machine, without having to worry about FTP servers, or people accidentally seeing your half-finished work. If you’re working independently, or your staging server is incredibly slow, the time savings of working locally can not be understated. Working locally is also a beautiful thing when you don’t have Internet access, or access is spotty; I once got a website halfway to launch on a plane ride to Texas.