MAMP

MAMP stands for MacOS + Apache + MySQL + PHP. It is the platform for a number of web-based applications, including Mediawiki.

Installation
When these applications are installed under Linux, the platform is called LAMP; when installed under Windows with IIS instead of Apache, the platform is called WIMP.

MAMP is available in a prepackaged format that installs in a single application directory. It is comes in a free package, MAMP, and a paid version, MAMP Pro.