Joomla! runs on any platform including Windows, most flavours of Linux, several Unix versions, and the Apple OS/X platform. Joomla! depends on PHP and the MySQL database to deliver dynamic content.
The minimum requirements are:
Apache 1.x, 2.x and higher
PHP 4.3 and higher
MySQL 3.23 and higher
It will also run on alternative server platforms such as Windows IIS - provided they support PHP and MySQL - but these require additional configuration in order for the Joomla! core package to be successful installed and operated.