The “Markdown Editor App” is a simple but powerful Google Chrome App for working with Markdown and other text based file formats. It is a basic Markdown editing tool, which works even offline. You can install it on Chrome on Windows, Linux, Mac and ChromeOS (Chromebooks).
It also supports few keyboard shortcuts like CTRL + P for showing HTML preview of the entered Markdown text. You can open Markdown and other text based files with it. On ChromeOS, it can be set as the default application for dealing with markdown files.
Update: We have discontinued this Chrome App, as Google is going to end support for Chrome Apps soon. Read more about it here:https://blog.chromium.org/2020/08/changes-to-chrome-app-support-timeline.html