What are some alternatives?
When comparing Telcob and Twilio, you can also consider the following products
BulkSMS - SMS messaging service provider offering two-way SMS communication services.
Nexmo - Nexmo is a simple two way SMS API with global reach and wholesale rates
Textlocal - Textlocal is an app that allows for individual and group texting. It is designed for businesses that have employers and employees who need to communicate with each other, making it easier to announce group meetings and special announcements.
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.
MyOperator - MyOperator is a cloud-based call management system for voice communication purposes.
MessageBird - Reach 7 billion phones in seconds via SMS, Chat & Voice. Try it for free and improve your communication.