The Firebase Python Library python-firebase contains development information for the Firebase API, written in Python. This library provides developers a way to integrate the API with their web applications using Python.
When it comes to map mashups there's no doubt that Google Maps leads the way. On ProgrammableWeb we list 1,964 Google Maps mashups, almost four times as many as any other API. This popularity makes utilities built on top of Google Maps especially interesting, such as this contextual menu control, which pops up a menu when the user right clicks.