GitHub is stepping into the text editor arena with Atom. Although the editor acts as a web application, the project is using a specialized variant of Chromium to render itself as a native application. This allows Atom to access local resources, like a file system browser, where a normal web application would have security restrictions.
For this reason, we didn't build Atom as a traditional web application. Instead, Atom is a specialized variant of Chromium designed to be a text editor rather than a web browser. Every Atom window is essentially a locally-rendered web page.Not too much to see yet, but you can visit the landing page to sign up for the beta.