Box Windows SDK by Box is built upon the Portable Class Library and targets various .Net frameworks including .NET for Windows Store apps, .NET Framework 4.0.3, Silverlight 4 and higher, Windows Phone 7.5 and higher. This SDK is written in .Net.
FoxWeave, data migration and synchronization platform, allows developers to provide FoxWeave functionality in third party apps via the FoxWeave API. FoxWeave syncs beyond cloud storage providers. Rather, FoxWeave syncs data from apps, databases, on-premise storage, cloud storage, email accounts, and more. The FoxWeave API enables developers to decide where the best single point of synchronization makes sense for an individual or business entity.