This is a .NET library for the Fitbit API developed by Aaron Coleman. Besides the library, the project contains NUnit tests, NUnit integration within the API, and a sample to use. Fitbit tracks patterns of health and fitness practices using mobile devices. Currently, the author is working on an updated version at https://github.com/aarondcoleman/Fitbit.NET/wiki/PREPARING-FOR-BREAKING-CHANGES---v2-Fitbit.NET-API-Library-In-Development
Nike has launched the Nike+ API developer portal. The portal gives developers access to data captured by Nike+ FuelBand and Nike+ Running through an API. The goal of the developer portal and corresponding APIs consists of a health driven, forward thinking aim.