PHP

PHP is a widely-used general-purpose scripting language that is especially suited for web development and can be embedded into HTML. www.php.net

MySQL

The world's most popular open source relational database management system. www.mysql.com

JavaScript

JavaScript is a scripting language most often used for client-side web development. en.wikipedia.org/wiki/JavaScript

AJAX

(Asynchronous JavaScript and XML), or AJAX, is a group of interrelated web development techniques used for creating interactive web applications or rich Internet applications. en.wikipedia.org/wiki/AJAX

Smarty

Smarty is a web template system written in PHP. Smarty is primarily promoted as a tool for separation of concerns, which is a common design strategy for certain kinds of applications. www.smarty.net

CSS

Cascading Style Sheets is a stylesheet language used to describe the presentation of a document written in a markup language. It is designed primarily to enable the separation of document content (written in HTML or a similar markup language) from document presentation (written in CSS). en.wikipedia.org/wiki/Cascading_Style_Sheets