Twilio - Brings voice and messaging to your web and mobile applications.
Cashew Secure Messenger - Cashew text messaging APP with HIPAA and Sarbanes-Oxley (SOX), Compliant secure text messaging for...
Bandwidth - Bandwidth offers SIP trunking, Emergency communications, and Voice & Messaging APIs.
Privnote - Send notes that will self-destruct after being read
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Gab - Gab is an ad-free social network dedicated to free speech.