The RightScale NodeJS SDK by Chris Fordham is written in NodeJS language to facilitate the construction of apps that work with a suite of Rightscale APIs. The SDK communicates with the RightScale Cloud Analytics API, and Rightscale Cloud Management API, and RightScale Self-Service API.
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.
Cloud-based telephony service Twilio helps you build any telephony-based app you would need. You could build anything from a simple call reminder service to a complete phone-based interaction system for your app through Twilio's API. And now the company has added a bunch of new features.