Joomla is an open-source content management system which allows users to build websites & online applications, with site templates, and multi-language support.
Isotype.org Programming Languages And Frameworks Technology
PHP: Hypertext Preprocessor is a server-side scripting language designed for Web development, but also used as a general-purpose programming language. PHP code may be embedded into HTML code, or it can be used in combination with various web template systems, web content management systems, and web frameworks.