Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
NuovoTeam - NuovoTeam Push-to-Talk (PTT) App for Frontline Workforce.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Zello - Zello's push-to-talk app redefines the walkie talkie. It's a great push-to-talk over cellular (PoC) alternative for businesses and organizations. Learn more about the best walkie talkie app in the market.
Plivo - Plivo simplifies your customer engagement.
ProPTT2 Video Push-to-Talk - ProPTT2 Video Push-to-Talk is a live broadcasting app with Push to talk feature, which is just like Facebook live.