Twilio - Brings voice and messaging to your web and mobile applications.
NextCall - 1 click to join upcoming Zoom calls (and other video calls)
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
ABBYY Business Card Reader - Scan cards ≡ in a second and manage them everywhere ☁
Clockwork SMS - Clockwork is an Easy Text Message API. An SMS API for Developers. Build powerful apps and include SMS. Signup is free, Try it now.
BroadSoft UC-One - UC-One is a suite of cloud communications offering business phone services, messaging, audio and video conferencing, and more.