Python - Python is a clear and powerful object-oriented programming language, comparable to Perl, Ruby, Scheme, or Java.
JavaScript - Lightweight, interpreted, object-oriented language with first-class functions
PHP - A popular general-purpose scripting language that is especially suited to web development
Java - A concurrent, class-based, object-oriented, language specifically designed to have as few implementation dependencies as possible
Sass - Syntatically Awesome Style Sheets
DevExpress Universal - Universal controls toolkit to building apps for Winform, ASP.NET, WPF, Windows 10 App, HTML5.