https://github.com/fonoster/fonoster
🚀 The open-source alternative to Twilio.
https://github.com/fonoster/fonoster
cloud cloud-communications-platform cpaas customer-engagement customer-experience javascript kubernetes nodejs programmable-voice telephony twilio typescript ucaas voip webrtc
Last synced: 6 days ago
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🚀 The open-source alternative to Twilio.
- Host: GitHub
- URL: https://github.com/fonoster/fonoster
- Owner: fonoster
- License: mit
- Created: 2018-02-04T02:58:54.000Z (about 7 years ago)
- Default Branch: main
- Last Pushed: 2024-10-27T07:03:26.000Z (6 months ago)
- Last Synced: 2024-10-29T20:25:38.284Z (6 months ago)
- Topics: cloud, cloud-communications-platform, cpaas, customer-engagement, customer-experience, javascript, kubernetes, nodejs, programmable-voice, telephony, twilio, typescript, ucaas, voip, webrtc
- Language: JavaScript
- Homepage: https://fonoster.com
- Size: 128 MB
- Stars: 6,350
- Watchers: 107
- Forks: 349
- Open Issues: 5
-
Metadata Files:
- Readme: README.md
- Contributing: CONTRIBUTING.md
- Funding: .github/FUNDING.yml
- License: LICENSE
- Code of conduct: CODE_OF_CONDUCT.md
- Security: SECURITY.md
Awesome Lists containing this project
- awesome-rtc - Fonoster - Telecommunication stack built with Node.js. (Operations / Web/API Interfaces)
- awesome-open-source-systems - Fonoster - The open-source alternative to Twilio. (Uncategorised / Uptime Monitoring)
- my-awesome-list - fonoster - source alternative to Twilio. | fonoster | 6571 | (TypeScript)
README
# Fonoster: The open-source alternative to Twilio
[Fonoster](https://fonoster.com) is researching an innovative Programmable Telecommunications Stack that will allow businesses to connect telephony services with the Internet entirely through a cloud-based utility.
 [](https://github.com/fonoster/fonoster/actions/workflows/release.yaml) [](https://discord.gg/4QWgSz4hTC) 
 
## Features
The most notable features of Fonoster are:
- [x] Multitenancy
- [x] Easy deployment of PBX functionalities
- [x] Programmable Voice Applications
- [x] NodeJS SDK
- [x] Support for Amazon Simple Storage Service (S3)
- [x] Secure API endpoints with Let's Encrypt
- [x] Authentication with OAuth2
- [X] Authentication with JWT
- [x] Role-Based Access Control (RBAC)
- [x] Plugins-based Command-line Tool
- [x] Support for Google Speech APIs
## Code Examples
A Voice Application is a server that controls a call's flow. A Voice Application can use any combination of the following verbs:
- `Answer` - Accepts an incoming call
- `Hangup` - Closes the call
- `Play`: Takes a URL with a media file and streams the sound back to the calling party
- `PlayDtmf` - Takes a DTMF sequence and plays it back to the calling party
- `Say` - Takes a text, synthesizes the text into audio, and streams back the result
- `Gather` - Waits for DTMF or speech events and returns back the result
- `SGather` - Returns a stream for future DTMF and speech results
- `Stream` - Creates a bidirectional stream to send and receive audio from a caller
- `Dial` - Passes the call to an Agent or a Number at the PSTN
- `Record` - It records the voice of the calling party and saves the audio on the Storage sub-system
- `Mute` - It tells the channel to stop sending media, effectively muting the channel
- `Unmute` - It tells the channel to allow media flow
Voice Application Example:
```typescript
const VoiceServer = require("@fonoster/voice").default;
const {
GatherSource,
VoiceRequest,
VoiceResponse
} = require("@fonoster/voice");
new VoiceServer().listen(async (req: VoiceRequest, voice: VoiceResponse) => {
const { ingressNumber, sessionRef, appRef } = req;
await voice.answer();
await voice.say("Hi there! What's your name?");
const { speech: name } = await res.gather({
source: GatherSource.SPEECH
});
await voice.say("Nice to meet you " + name + "!");
await voice.say("Please enter your 4 digit pin.");
const { digits } = await voice.gather({
maxDigits: 4,
finishOnKey: "#"
});
await voice.say("Your pin is " + digits);
await voice.hangup();
});
// Your app will live at tcp://127.0.0.1:50061
// and you can easily publish it to the Internet with:
// ngrok tcp 50061
```
Everything in Fonoster is an API first, and initiating a call is no exception. You can use the SDK to start a call with a few lines of code.
Example of originating a call with the SDK:
```typescript
const SDK = require("@fonoster/sdk");
async function main(request) {
const apiKey = "your-api-key";
const apiSecret = "your-api-secret"
const accessKeyId = "WO00000000000000000000000000000000";
const client = new SDK.Client({ accessKeyId });
await client.loginWithApiKey(apiKey, apiSecret);
const calls = new SDK.Calls(client);
const response = await calls.createCall(request);
console.log(response); // successful response
}
const request = {
from: "+18287854037",
to: "+17853178070",
appRef: "3e61ecb7-a1b6-4a93-84c3-4f1979165bca",
// Optional metadata to be sent to the Voice Application
metadata: {
name: "John Doe",
message: "Please call me back."
}
};
main(request).catch(console.error);
```
## Getting Started
To get started with Fonoster, use the following resources:
- [Deploying Fonoster with Docker](https://docs.fonoster.com/self-hosting)
- [Guide for Early Access User](https://docs.fonoster.com/quickstart)
- [Getting started with Fonoster](https://docs.fonoster.com/quickstart)
- [How we created an open-source alternative to Twilio and why it matters](https://dev.to/fonoster/how-we-created-an-open-source-alternative-to-twilio-and-why-it-matters-434g)
## Give a Star! ⭐
Please give it a star if you like this project or plan to use it. Thanks 🙏
## Bugs and Feedback
For bugs, questions, and discussions, please use the [Github Issues](https://github.com/fonoster/fonoster/issues)
## Contributing
For contributing, please see the following links:
- [Contribution Documents](https://github.com/fonoster/fonoster/blob/main/CONTRIBUTING.md)
- [Contributors](https://github.com/fonoster/fonoster/contributors)
Pedro Sanders
Angel M. Bencosme
Efrain Peralta
Wandy Hernandez
Obruche Wilfred Oghenechohwo
Wardner Lara
Richard HC
Nageswari
Hoan Luu Huu
Speedy Monster
harry_dev
Kanishka Chowdhury
Brayan Munoz V.
Dede kurniawan
gabriel duncan
Prasurjya Pran Borah
Jordan
Hector Ventura
0xflotus
Manish
Osama Sehgol
Paul Sütterlin
Riad Vargas
Shailendra Paliwal
The Gitter Badger
Yuri
cdrsociate
pavan
nrjchnd
Salami Bashir
Shivam Deepak Chaudhary
Yossef Haim
telenautical
Wisdom Elendu
Judge Godwins
Jon Chin
Harish Chander
Gary Barnes
Fidal Mathew
Enmanuel Toribio
Dung Duc Huynh (Kaka)
Ciprian
Christopher Adigun
Bruno Gomes
Bruno Arueira
Antonius Ostermann
Ali Firat ARI
Alex
## Sponsors
We're glad to be supported by respected companies and individuals from several industries.
Find all our supporters [here](https://github.com/sponsors/fonoster)
> [Become a Github Sponsor](https://github.com/sponsors/fonoster)
## Authors
- [Pedro Sanders](https://github.com/psanders)
## License
Copyright (C) 2025 by [Fonoster Inc](https://fonoster.com). MIT License (see [LICENSE](https://github.com/fonoster/fonoster/blob/main/LICENSE) for details).
