The FlightStats Python SDK by benzid-wael allows API communication via authentication and callbacks. It provides tests available at https://github.com/benzid-wael/flightstats/blob/master/tests/test_flightstats.py
Seven more APIs have been added to the ProgrammableWeb directory in categories including Health, Invoicing, Chat, eCommerce. Highlights include an API that provides data about holidays in Europe and an API that allows apps to search for flights. Here's a rundown of the latest additions.