Twilio is described as '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' and is an website in the social & communications category. There are more than 100 alternatives to Twilio, not only websites but also apps for a variety of platforms, including SaaS, Android, iPhone and Windows apps. The best Twilio alternative is UniStack. It's not free, so if you're looking for a free alternative, you could try Vendel or Sherlock Calls. Other great sites and apps similar to Twilio are Dexatel, Smarter Contact, Lead Sherpa and Textmagic.
This RESTful API is a modern API that lets you use the message services provided by iP.1 Networks AB via your own applications. Do everything from just sending SMS messages to managing contacts and sending surveys.
Textedly instantly sends 10-100,000 mass SMS text messages to any mobile phone number. Easily build an opt-in subscriber list. Instantly upload your list of mobile phone number subscribers. Schedule text messages to go out any time you want.
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.
Receive & send SMS messages, allocate phone numbers, control incoming phone calls, build IVRs, connect calls and create automated outgoing phone calls. Simply Voice, SMS & MMS in one easy API.
Voximplant is a cloud platform for developing real-time communication apps with full control over voice and video. Our cloud application engine provides developers with a way to control every call leg using JavaScript logic.
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 and Push notifications in applications and web browsers.
The Hangouts API provides the programming interface to Hangouts video calls. It provides a JavaScript interface that enables your app to do such things as list the Hangout participants, share data between instances of your app in the Hangout, control some aspects of the user...
Vivial Connect APIs power SMS and MMS for authentication services, platform alerts, touchless payments and business messaging. Simple & Flexible. Only Pay for What You Need. https://vivialconnect.net/register.
Sweden
EU
India
United States
Russia
United Kingdom
Czechia
Its one the customizable software and one time licence cost.