Hyper is an Electron-based terminal built on HTML/CSS/JS and fully extensible. You can install themes and plugins directly from the command line. The project's goal is to provide a beautiful and extensible interface for command-line users that is built on open web standards. Our initial focus will be on speed, stability, as well as the development of the right API for extension authors. We expect that the community will continue to innovate and improve what could be the most simple, powerful, and well-tested interface to productivity. Extensions can be found on npm. All command keys can also be modified. Extensions are universal Node.js modules that can be loaded by both Electron or the renderer process. Instead of exposing every customization point's custom API method or parameter, extensions allow you to intercept and create every bit of functionality. The Hyper repository contains additional information about plugin development.