HTML: Hypertext Markup Language, a major Web technology and a standardized system for tagging text files and defining the structure of World Wide Web pages.
CSS: Cascading Style Sheet, a language used for describing the presentation of a document written in a markup language.
Bootstrap: an open-source collection of tools for creating websites and web applications. It contains HTML- and CSS-based design templates for typography, forms, buttons, navigation and other interface components.
PHP: a server-side scripting language that is used to make dynamic websites and web applications
MySQL: an open source Relational Database Management System (RDBMS) that uses Structured Query Language (SQL). MySQL is the most popular language for adding, accessing and managing content in a database.