Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
Twilio - Brings voice and messaging to your web and mobile applications.
Facebook Messenger - Facebook Messenger is a faster way to message.
Plivo - Plivo simplifies your customer engagement.
WhatsApp - WhatsApp Messenger: More than 1 billion people in over 180 countries use WhatsApp to stay in touch with friends and family, anytime and anywhere.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.