Commuter is a mobile application for getting commuting directions, either by walk, public transportation, cycling, or combination of them.
Since it acts a client for the OpenTripPlanner system, it can in theory work with any deployed system.
Currently supports:
* Portland: TriMet Regional Trip Planner (RTP)
* Israel: Hamakor – Israeli Society for FOSS
The source code is now available from a public repository under a free software license:
https://code.google.com/p/otp-android/
You can take a look at the underlying OTP client library:
http://code.google.com/p/otp-java-client/