Sinch
Sinch is a powerful voice and messaging SDK that lets you bring your apps to life with VoIP and WebRTC technology. Simplicity is at its core and you can get your first app up and running in a few lines of code and a matter of minutes.
Agora.io
Agora.io provides the building blocks developers need to add high definition voice and video communication to any mobile or PC ...
CALLR
CALLR is a voice and messaging API available through REST, JSON-RPC and SDKs (PHP, Python, Ruby, Go, Node.JS, Swift, Java, .NE ...
Flashy
Flashy helps you get to know your contacts and deliver to each one of them the right message at the right time via email, SMS ...
TumaSMS
SMS Messaging, Simplified.Compliant, reliable and scalable SMS infrastructure for business-critical transactional and marketin ...
Voximplant
Voximplant is a cloud platform for developing real-time communication apps with full control over voice and video. Our cloud a ...
Apptimate
Apptimate is the most secure Communication and Positioning as a Service. We offer secure Point-2-multi point communication bet ...
E-goi
Marketing Automation Platform: email, SMS, forms/surveys, social media, voice, fax E-goi is a multichannel marketing platform ...
Clockwork SMS
An simple text message API.
ip-1-restful-api
Bandwidth+
Track your Wi-Fi hotspot usage. Zero configuration required. It just works. Advanced features coming soon. New monthly usage t ...
The SMS Works SMS API
The SMS Works SMS API is low cost, reliable and easy to integrate. We have a simple and powerful USP. Customers only pay for d ...
Tokpod
In less than 5 minutes, your customers or site visitors can call you directly from your website with a simple click of a butto ...
Twilio
Twilio is a web-service API that lets you use your existing web languages and skills to build voice and SMS applications. We f ...