Twilio - Brings voice and messaging to your web and mobile applications.
TextNow - TextNow is a mobile virtual network operator (MVNO) that provides a free phone service to users by using other cellular networks coverage.
Plivo - Plivo simplifies your customer engagement.
Dingtone - Dingtone is a free call and texting application for making unlimited calls and text messages to any number at the moment registered in any part of the world by any cellular company.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
TextMe - TextMe is a free calls and messaging application at both local and international levels.