emacs package don't exist yet as far as I know. But the API's are open and should be easy to write. I think that the hard part would be the UI for displaying variables and stacks.
The server side code is not open-source, mainly for use of internal technologies. But why do you really need it? Google offers it's usage for free.
The server side code is not open-source, mainly for use of internal technologies. But why do you really need it? Google offers it's usage for free.