Kudu console

The Kudu Console is a tool that gives you both command line and file browser access to your sites, all from the comfort of a web browser.

If you start at the root of the Kudu service, you'll see a Diagnostic console link that leads to the Kudu Console.

Note that there is also a local (non-browser based) client that gives you the same Console functionality. See this post for details. The post also has some good information about the Console that also applies to the browser-based version, so please read through.