The Google Cloud Storage Java SDK by Google allows developers to integrate the Google Cloud Storage API into their Java applications. This SDK requires Java 7+. It's offered under the Apache 2.0 License.
In January, OnStar announced an API would allow third party developers to integrate their applications with OnStar's platform. Last week, General Motors announced its first partner for API integration: RelayRides. RelayRides is "[t]he world's largest peer to peer carsharing marketplace." The partnership with GM allows OnStar users to leave their keys in their cars when renting a car to a fellow RelayRider. The renter can then unlock the car with a smartphone app or by responding to a text message.
Platform as a Service (PaaS) is widely considered to be the ideal way to get your applications to the cloud. Google with its App Engine product was among the first off the blocks and the last few years have seen steady fixes and enhancements to the platform.