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.
Telephony and voice APIs are one of the most active segments of the API and mashup world. For example, in the past week, two of the latest mashups in our directory use telephony APIs in innovative ways (the directory has 42 telephony-related APIs):