Pulse SMS - Pulse SMS is a next-generation SMS and MMS application that is fast, secure and packed with lots of modern features as well as customization feature you cloud want.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
QKSMS - QKSMS is a beautiful communication app that offers magical texting experience.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Textra - Textra is a seriously beautiful, feature rich SMS and MMS app.
Plivo - Plivo simplifies your customer engagement.