PHP, MySQL HTML, HTML5, Resposive Designs, Bootstrap Frameworks Java Script, jQuery, MooTools, AJAX MVC Frameworks like CodeIgniter/CakePHP Wordpress, Joomla, Magento, Opencart, APIs like Facebook, Twitter, Instagram, oAuth, ClickaTell Gateways for SMS, Payment, Paypal, Authorize, Twilio Version Control - SVN, Git, baseCamp, bitbucket etc