> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ringee.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction

> Welcome to the Ringee documentation

<Note>
  YouTube Tutorials:
  [https://youtube.com/@RingeeOfficial](https://youtube.com/@RingeeOfficial)
</Note>

## What is Ringee?

Ringee is your **open-source global calling & communication infrastructure** — an alternative to expensive VoIP providers, up to **50× cheaper** than traditional phone rates.

Make and receive crystal-clear calls to **180+ countries**, manage contacts, record calls, and scale your sales team — right from your browser.

* 📞 **Global Calls** — Call landlines and mobile phones in 180+ countries. No apps, no SIM cards needed.
* 🔊 **WebRTC Telephony** — Powered by Telnyx WebRTC for crystal-clear, low-latency voice.
* 🎙️ **Call Recording** — Record conversations for quality assurance, training, or compliance.
* 👥 **Contact Management** — Import thousands of contacts via CSV, organize with tags, search instantly.
* 📊 **Team Analytics** — See your whole team's calling metrics: calls per day, per month, per agent.
* 🤖 **AI Voice Agents** — Book appointments, deliver reminders and return structured outcomes from real conversations.
* 💰 **Cost Effective** — Buy numbers from 180+ countries at a fraction of the cost.
* 🏗️ **Open Source** — Self-host the entire infrastructure, or use our hosted service.

<CardGroup cols={2}>
  <Card title="Quickstart" icon="rocket" href="/quickstart">
    Get Ringee up and running in under 5 minutes
  </Card>

  <Card title="How it works" icon="diagram-project" href="/howitworks">
    Learn the architecture behind Ringee
  </Card>
</CardGroup>

## Tech Stack

| Layer | Technology |
| - | - |
| **Monorepo** | pnpm workspaces |
| **Frontend** | Next.js 15 (React 19, App Router) |
| **Backend** | NestJS (REST & Webhooks) |
| **Orchestrator** | Temporal worker for durable background jobs |
| **Database** | PostgreSQL with Prisma ORM |
| **Cache** | Redis |
| **Telephony** | Telnyx WebRTC |
| **Auth** | Clerk |
| **Payments** | Stripe |
| **Notifications** | Firebase Cloud Messaging |
| **Storage** | Cloudflare R2 |
| **Email** | Resend |

## Use Cases

Perfect for building your own:

* **Scalable VoIP infrastructure**
* **Cold calling platform**
* **Call center solution**
* **Sales team communication hub**

<Info>
  At the moment there is no difference between the hosted version and the
  self-hosted version.
</Info>

## Build on Ringee

Ringee is designed to be embedded, automated and driven by agents.

<CardGroup cols={2}>
  <Card title="Public API" icon="webhook" href="/api/overview">
    Sync any CRM and receive call activity through signed webhooks
  </Card>

  <Card title="Dialer SDK" icon="phone" href="/dialer-sdk/overview">
    Embed a real dialer inside your own web app
  </Card>

  <Card title="MCP" icon="robot" href="/mcp/overview">
    Let Claude or ChatGPT operate Ringee on your behalf
  </Card>

  <Card title="CLI" icon="terminal" href="/cli/overview">
    Run Ringee from the terminal or any agent harness
  </Card>

  <Card title="AI Voice Agents" icon="robot" href="/voice-agents/overview">
    Create autonomous calling agents and trigger them through API, MCP or CLI
  </Card>
</CardGroup>

Not sure which one you need? See [Ways to build on Ringee](/build-on-ringee).


This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.