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@fonoster

Fonoster

The open-source alternative to Twilio.

Hey, this is us

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We are building Fonoster in the open. We've been doing this since October 2020. Since then, we pushed over 5 thousand commits, opened over 130 issues, and submitted roughly +200 pull requests across 32 repositories 🤯.

Built by the community

The open-source community is the 💗 heart of Fonoster and fundamental to how we build software today.

Are you contributing to Fonoster? Yes? Okay, you rock! 🎸 If not, we can help you get started! Open-source software is made by people just like you. Learn more about how to contribute.

Contributing

You can contribute to the tools 🔧 you rely on from Fonoster. Here is a list of the top projects to contribute to:

  • Fonoster - The primary repo for Fonoster's ecosystem
  • Goodtok - A modern video-oriented contact center
  • Routr - The heart of our VoIP Network

eBook - The future of programmable SIP servers

This handbook is designed to provide a detailed understanding of the innovative features, challenges, and opportunities that Routr presents in the realm of programmable SIP Servers.

Get the eBook.

Become a sponsor

Help us get to our monthly goal. Currently => ▮▮▮▮▯ 85%

If you plan to use Fonoster, a monthly contribution would mean a lot. On its own, open-source doesn't pay the bills. Continuing our work can be sustainable with your help.

Click here to become a GitHub Sponsor 👈👈

Other awesome Telecom OSS

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  1. fonoster fonoster Public

    The AI that answers the phone.

    TypeScript 8.2k 566

  2. roomr roomr Public

    Media edge for voice AI. Calls in, audio mixed in rooms, streamed to your app.

    Go 9

Repositories

Showing 10 of 16 repositories
  • fonoster Public

    The AI that answers the phone.

    fonoster/fonoster's past year of commit activity
    TypeScript 8,154 MIT 566 4 3 Updated Oct 29, 2026
  • roomr Public

    Media edge for voice AI. Calls in, audio mixed in rooms, streamed to your app.

    fonoster/roomr's past year of commit activity
    Go 9 MIT 0 2 9 Updated Oct 29, 2026
  • routr Public

    ⚡ The future of programmable SIP servers.

    fonoster/routr's past year of commit activity
    TypeScript 1,718 MIT 184 0 0 Updated Oct 28, 2026
  • .github Public

    Org Profile

    fonoster/.github's past year of commit activity
    0 0 1 1 Updated Oct 27, 2026
  • seet Public

    SEET: Orchestrating multiple user-agents for complex SIP testing scenarios.

    fonoster/seet's past year of commit activity
    TypeScript 22 0 0 2 Updated Oct 22, 2026
  • sipp-js Public

    A Javascript wrapper for SIPp

    fonoster/sipp-js's past year of commit activity
    TypeScript 7 MIT 2 0 1 Updated Oct 22, 2026
  • qcobro Public

    Intelligent Collections with Voz AI.

    fonoster/qcobro's past year of commit activity
    TypeScript 6 0 8 0 Updated Oct 13, 2026
  • nodejs-processor Public template

    A template with everything you need to start creating custom Routr processors

    fonoster/nodejs-processor's past year of commit activity
    JavaScript 6 MIT 3 0 0 Updated Jan 4, 2026
  • goodtok Public

    A better shopping experience 🤙

    TypeScript 100 MIT 18 1 5 Updated Oct 1, 2025
  • homer10 Public

    Minimal Homer 10 Lab

    fonoster/homer10's past year of commit activity
    4 0 0 0 Updated Jun 8, 2025