Hypertext languages are coding systems used to create and structure content on the web. They allow for the linking of text, images, and other media, enabling users to navigate between different pieces of information easily. The most common hypertext language is HTML, which stands for Hypertext Markup Language. It provides the basic framework for web pages. In addition to HTML, other hypertext languages like XML (eXtensible Markup Language) and XHTML (eXtensible Hypertext Markup Language) are also used. These languages help define data and structure content in a way that is both human-readable and machine-readable, facilitating better data interchange on the internet.