Twilio - Brings voice and messaging to your web and mobile applications.
Plivo - Plivo simplifies your customer engagement.
SightCall - SightCall offers comprehensive real-time video APIs and Mobile SDKs that makes it simple to embed...
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Applozic - Chat API & In-App Messaging SDK for Mobile & Web Apps Innovate fast, save development cost and delight users with a scalable, secure and customizable Chat
Vidyo.io - Our hosted video chat API makes it simple for devs to embed beautiful multiparty video into apps on any device. Learn more here: https://t.co/4b5EbRg0SG