The Plivo Go SDK by Seyi Ogunyemi allows to communicate with the API to implement telephony features into cloud applications. It includes installation and usage. Documentation is available at http://godoc.org/github.com/micrypt/go-plivo/plivo
Facebook recently introduced Graph API V3.2, which includes updates to Instagram Graph API, Page Insights, Pages and Video Polls, and Marketing API. The company also announced updates to Facebook Login and the Messenger App.
Cloud orchestration platform provider Engine Yard has released a new "Core API" that will eventually replace its existing API. The new API has been used internally by the company and reached a level of maturity and stability that made the company comfortable making it available to customers.