=> E-commerce : ( Magento, Opencart, Woocommerce, Shopify)
=> MVC : (PHP, Codeigniter, Laravel)
=> CMS : (WordPress, Joomla, Moodle Wix)
=> Database : (MySQL, MSSQL, SQLite, MongoDB, PostgreSQL)
=> Design : (Graphic Design Web design, Adobe PhotoShop, Illustrator, CSS, JQuery, JQuery Bootstrap PSD-TO-HTML Mobile, XML,HTML5/CSS3, UI/UX)
=> Payment Gateways: PayPal, Payoneer, Google Checkout...