Blueshield is a PHP application, built on CodeIgniter PHP framework v3.1.2 (latest stable version). It allows web developers to quickly build web apps, Websites without building User registration, user login, password reset, etc.. features by their own. also Blueshield is highly scalable and easy to maintain due to it’s HMVC (Hierarchical model–view–controller) architecture and modular code base. and its front-end designed by using latest Bootstrap version(v3.3.7). No any third party theme used. So it’s really easy to customize Blueshield’s user interfaces.