What are some alternatives?
When comparing Contus Fly and Twilio, you can also consider the following products
Slack - A messaging app for teams who see through the Earth!
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Telegram - Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free.
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.
Discord - Step up your game with a modern voice & text chat app. Crystal clear voice, multiple server and channel support, mobile apps, and more.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.