Octopush - Octopush is a company providing technology-based communication solutions, including SMS, Web solutions, and Email APIs.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Clearstream - Clearstream is a SMS marketing and online texting software.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Swift SMS Gateway - SMS Gateway is your bridge between the Internet and the world of cell phone SMS text messaging.
Plivo - Plivo simplifies your customer engagement.