LAMP is a the combination of Linux with Apache Apache HTTP Server, MySQL MySQL (database software) and Perl (PHP or Python) to create a viable general purpose web server.

XAMPP - Cross Platform LAMP

LEMP - web stack using Nginx

Hiawatha - alternative web server.

HiawathaServerMySql - web server and MySql.

XAMPP homepage

WikiPedia:XAMPP

Why install Apache MySql and PHP?

Install LAMP and enable PHP error reporting - example using Debian style apt-get - install PET or SFS instead