TwilioFluent is a collection of libraries for working with Twilio. It includes a fluent TwiML builder, validation code for Twilio request signatures, and helpers for ASP.NET MVC 3 that can return ActionResults and apply signature validation.
AOL has just launched a new telephony web service for developers: the Open Voice API. This API is intended to "provide third-party developers and VoIP device manufacturers with open standards protocols that will enable them to easily integrate the AIM Call Out service into softphones, as well as SIP-enabled hardware and cell phones with wi-fi connectivity."
Most mashups try to solve a complex problem in an innovative way, and therefore save us all time. However, sometimes a mashup solves a very simple problem in an interesting way. Either way, I love to see innovative new uses of APIs like this one from Brian Beermann, which controls his garage door using the Twilio SMS API, some hardware and a lot of creativity.