PHP is a general-purpose server-side scripting language originally designed for web development to produce dynamic web pages. wikipedia.org

jQuery is a cross-browser JavaScript library designed to simplify the client-side scripting of HTML. Its syntax is designed to make it easier to navigate a document, select DOM elements, create animations, handle events, and develop Ajax applications. wikipedia.org

Drupal is a free and open-source content management system (CMS) and content management framework (CMF) written in PHP and distributed under the GNU General Public License. wikipedia.org

CodeIgniter is an open source web application framework for use in building dynamic web sites with PHP. wikipedia.org

Git is a distributed revision control system with an emphasis on speed. Git was initially designed and developed by Linus Torvalds for Linux kernel development. wikipedia.org