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What is Fonoster?

Fonoster is an innovative Programmable Telecommunications Stack that allows businesses to connect telephony services with the Internet entirely through a cloud-based utility. The most notable features of Fonoster are:
  • Multitenancy
  • Easy deployment of PBX functionalities
  • Programmable Voice Applications
  • NodeSDK and WebSDK
  • Support for Amazon Simple Storage Service (S3)
  • Secure API endpoints with Let’s Encrypt
  • Authentication with OAuth2
  • Authentication with JWT
  • Role-Based Access Control (RBAC)
  • Plugins-based Command-line Tool
  • Support for Speech APIs from Google, Deepgram, ElevenLabs, and more
We’re open source, and you can use the Fonoster Cloud (Coming soon) or Self-host Fonoster on your infrastructure.

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What can you build?

With Fonoster, you can build any type of voice application, from simple IVRs to advanced Voice AI. Check out a demo below for a glance at what you can make.

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Getting help

Join our Discord server

The #get-help channel is a great place to get help with any questions about Fonoster.

Follow us on X (Twitter)

Follow us on X (Twitter) for the latest updates and news.

Schedule a call

Arrange a call with the team. We can help answer questions and give 1-on-1 help building on Fonoster.

Give us a start on GitHub

Check us out at github.com/fonoster