Open Source Alternatives to Twilio

A communications API platform that lets developers embed voice calls, SMS, email, video, and AI-driven conversational features into applications, providing usage-based pricing and scalable infrastructure.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Twilio give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 2 open source alternatives to Twilio. The most popular are Novu and Routr. Most use the MIT or Proprietary license, and 2 offer an official Docker image.