What are some alternatives?
When comparing Twilio and Voxbone, you can also consider the following products
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Plivo - Plivo's Voice API enables businesses to build Voice apps to reach customers globally in 200+ countries. Try Plivo's Voice API for free. Instant Sign Up.
Bandwidth - Bandwidth offers SIP trunking, Emergency communications, and Voice & Messaging APIs.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Telnyx - Telnyx is a cloud-based platform that offers access to carrier grade voice services over the internet.
Clockwork SMS - Clockwork is an Easy Text Message API. An SMS API for Developers. Build powerful apps and include SMS. Signup is free, Try it now.