Kodingen
Okay, what the hell is a "Web Application Framework Environment"? It's a server configured to run Joomla and/or Drupal and/or, PHPmyAdmin and/or Wordpress, etc. The boys at Kodingen have a treat for Web Developers and Designers that need a playground to build and test out their new sites or web apps without having to deal with the hassle of running a development server.
It's a "Cloud Development Environment". They do all the heavy lifting. One-click installs are literally that, one click. Pick your favorite Content Management System, your favorite eCommerce System, your favorite Database Management System and click a button. You instantly have a working server, ready to begin coding. You can use any of several integrated text editors, or work offline and FTP your files to the server. Ever wanted to play with osCommerce, but didn't want to go through the tedious process of intallation and configuration? This is the place.
This is written by developers for developers. It supports every major browser except IE (who cares?). I cannot recommend it enough.