The Sinch SDK for iOS lets developers add voice calling and instant messaging capabilities to their iOS based mobile apps. The SDK handles signaling and audio management. In addition it offers support for:
App to app calling
App to phone calling
Instant messaging to single and multiple recipient
MessageBird has added a Voice API to its portfolio of cloud-based communications APIs. The Voice API adds calling features and functions to third party apps and services. Other APIs in its cloud-based communications portfolio include chat, SMS, MMS, voice messaging, and many more.
This article is part of a multi-part series where we discuss interesting APIs that were added to our directory during 2017. Business APIs are covered in this segment. The APIs were chosen by our researchers, by popularity according to website traffic, and by mentions on social media.