The HipChat Go SDK by Thomas Bruyelle allows developers to integrate the HipChat API v2 into their Go applications. Currently, this SDK only implements a small part of the API. Pull requests are welcomed.
Facebook has announced the release of a new beta API that will provide businesses with a method for offering its customers simple follow-up information. The new Messenger One-Time Notification API is designed for situations like price drops of merchandise or changes in availability.
Twilio has announced that support for RCS (Rich Communications Services) Business Messaging has been added to its communications platform. The company also announced the availability of Rich Messaging Extensions which enable native RCS capabilities supported by Twilio channels.