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

# TomorrowOS

> The open-source foundation for digital signage software across Tizen, webOS, BrightSign, and Android.

# TomorrowOS

The open-source foundation for digital signage software.

Build a new CMS, connect an existing product, or ship a custom signage experience across supported screen platforms. You own what you build — Apache 2.0, no seat licences, no revenue share.

Requires **Node.js 20** or newer.

```bash theme={null}
npm install @tomorrowos/sdk
```

<CardGroup cols={2}>
  <Card title="Beginners guide" icon="book" href="/docs/guides/beginners-guide">
    Understand TomorrowOS without needing to be a developer first.
  </Card>

  <Card title="Developer guide" icon="code" href="/docs/guides/developer-guide">
    Install the SDK and build your first player or integration.
  </Card>

  <Card title="API overview" icon="brackets-curly" href="/docs/api/overview">
    Device, capability, playback, package, and telemetry APIs.
  </Card>

  <Card title="Capability matrix" icon="table" href="/docs/capabilities/capability-matrix">
    What each OS, device, and firmware version can safely support.
  </Card>
</CardGroup>

## Platforms

<CardGroup cols={2}>
  <Card title="Samsung Tizen" href="/docs/os/tizen" />

  <Card title="LG webOS" href="/docs/os/webos" />

  <Card title="BrightSign" href="/docs/os/brightsign" />

  <Card title="Android" href="/docs/os/android" />
</CardGroup>