I worked on the Wave team. I wrote this a week before Wave was cancelled. Good timing!

This is mostly now only useful as an example of Cocoa Python code, and using three-legged OAuth from a desktop application.

Three-legged OAuth was a giant PITA. To make it work, a server component waits for a verifier token from the Google authentication process, which is stored in the AppEngine datastore. WaveGrowl polls the server component repeatedly until a timeout, or the auth token is verified.

• Python.
• Three-legged OAuth.
• Py2App.
• Cocoa.