Code for all of these examples can be found on GitHub.
Building an Airport Flight Data API
Building Mobile Data Collection Apps with Fulcrum & Accela
Visualizing Homicides in Philadelphia
SMS Restaurant Inspection Lookup
Introducing SEPTAlking: The Train is Listening
Fun with Node.js, Growl and SEPTA Twitter Feeds
Speech Enabling Open311
Phind It For Me
Civic Innovations 