Twilio - Brings voice and messaging to your web and mobile applications.
VirBELA - Remote communication and collaboration platform for online teams, classes, events and more.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Steller - Everyone has a story to tell. Tell yours with photos, videos, and text.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Mibo - Videoconferencing that feels like real life