Sirius - An open-source clone of Siri from UMICH
Twilio - Brings voice and messaging to your web and mobile applications.
Dunn Solutions Group - From Big Data Analytics and Business Intelligence to Mobile Application Design and e-Commerce Web Portal Development, we have your B2B or B2C needs covered
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
CRMIT - As a global Salesforce consulting and system integration partner, CRMIT delivers meaningful customer experience, consulting and solutions with a commitment to excellence
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates