Keypress Editor

This is the editor you were looking for. Keypress is an offline, desktop based code editor. Use Keypress to edit your local files, on any platform. Keypress features a stylish and simplistic interface, and intuitive features like project management and fuzzy search for opening files. It also supports versatile layouts, fullscreen mode, Emmet, and more. Keypress supports syntax highlighting for just about anything you could write, including HTML, CSS, LESS, Stylus, Javascript, Coffee, PHP, Ruby, Python, Markdown, Mustache, and more. Recently added support for 19 syntax highlighting themes (more to come).