Twilio - Brings voice and messaging to your web and mobile applications.
Veriff - Smart and scalable identity verification.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.
Sumsub - One verification platform to secure the whole user journey
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Onfido - Onfido is the data-driven platform for intelligent background checking.