Note: The price of this software is a monthly charge.
A professional text editor with support of HTML and other languages.
Commercial, professional grade version of the classic local server environment for OS X: MAMP.
Easy-to-install software stack of Apache, MySQL, PHP, Perl, Python, and Softaculous auto-installer that can be used on desktops and office servers.
BitNami MAPP Stack greatly simplifies the development and deployment of PHP app.