LifeSize - LifeSize offers video conferencing solution that enable human interaction over any distance.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
eyeson - Video meeting from your browser with an extra level of security.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
CallKite - Your website’s video call center in just one click.
Plivo - Plivo simplifies your customer engagement.