Sites and apps similar to ultramsg include Twilio. Other options are Whapi.Cloud, Plivo, MirrorFly and Textlocal. In total there are six Video Calling Apps like ultramsg for Android, iPhone, Chrome OS, iPad and self-hosting.
Twilio is a web-service API that lets you use your existing web languages and skills to build voice and SMS applications. We focus on building a simple, powerful, pay-as-you-go communications platform so that you can focus on what you do best.
United States
Delivers easy WhatsApp integration for developers via a REST API. Features include CRM, ERP support, detailed tutorials, JSON compatibility and comprehensive support for novice to experienced programmers.
Plivo offers a simple, quick, and scalable way to modernize customer communications. Businesses of all sizes — from growing startups to public companies — rely on Plivo to deliver better customer experiences.
MirrorFly is customizable in-app communication SDKs for businesses to integrate chat, voice, video calling and video conferencing features on their existing web and mobile applications.
India
Effortlessly send offers with files, images & web links via SMS. With 1,65,000 customers, Textlocal is India’s No.1 SMS Alerts and Marketing Platform. Overcome the tedious API integration with reliable, robust & easy-to-integrate bulk SMS APIs.
United Kingdom
Authkey is a versatile multiple channels platform, including SMS API, WhatsApp Business API, Email, Voice Call APIs, and various authentication methods such as OTP, 2FA, and more.
United Kingdom
