Emmet (previously Zen Coding) is a set of text editor plugins allowing for high-speed coding in HTML, XML, XSL, and other structured code formats by expanding CSS-like expressions of elements into their corresponding representation.
Emmet (previously known as Zen Coding) is a set of plug-ins for text editors that allow for high-speed coding in HTML, XML, XSL, and other structured code formats via content assist. The project was started by Vadim Makeev in 2008 and continues to be actively developed by Sergey Chikuyonok.
Emmet takes the snippets idea to a whole new level: you can type CSS-like expressions that can be dynamically parsed, and produce output depending on what you type in the abbreviation. Emmet is developed and optimized for web-developers whose workflow depends on HTML/XML and CSS but can be used with other programming languages too.