The Relayr Node.js SDK by Relayr offers an Internet of things platform that can be integrated with existing applications. It features a cloud solution for receiving and saving data from sensors. The current version is 0.3.8.
Nest developer program and API is new salvo in smart home war. Signaturit looks to sign up developers for its e-signing system with new API. Plus Microsoft creates feedback site for API requests, and 3Scale targets API consumers.
One of the big debates these days when it comes to cloud computing center around portability and interoperatbilty between providers. That is, if you build an application on Amazon's EC2 or Google's AppEngine or Force.com, or store your data on Box.net or Amazon's S3, how hard is it to port your application or move your data to another cloud provider? If you develop on a given platform, how locked-in, or not, are you? And beyond that, could developers benefit from having standardized APIs to develop to without having to learn a new model and interface each time. As you'd expect, there's no easy answer to this.