Cascading Style Sheets (CSS) is a simple mechanism for adding style (e.g., fonts, colors, spacing) to Web documents. CSS makes it possible to separate presentation instructions from the HTML content in a separate file or style section of the HTML file. For each matching HTML element, it provides a list of formatting instructions.
HyperText Markup Language, commonly referred to as HTML, is the standard markup language used to create web pages. HTML elements form the building blocks of all websites. HTML allows images and objects to be embedded and can be used to create interactive forms. It provides a means to create structured documents by denoting structural semantics for text such as headings, paragraphs, lists, links, quotes and other items.
Objective-J is a powerful object-oriented language which compiles to run in the browser. Because Objective-J is a superset of JavaScript, it's easy to mix and match. Objective-J extends JavaScript with traditional inheritance and Smalltalk/Objective-C style dynamic dispatch.
MySQL is an open-source relational database management system (RDBMS). On all platforms except Windows, MySQL ships with no GUI tools to administer MySQL databases or manage data contained within the databases.
PHP is a server-side scripting language designed for web development but also used as a general-purpose programming language. PHP code can be simply mixed with HTML code, or it can be used in combination with various templating engines and web frameworks. PHP code is usually processed by a PHP interpreter, which is usually implemented as a web server's native module or a Common Gateway Interface (CGI) executable.