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

# Desktop overview

> Architecture and scope of Overlay Desktop on macOS.

Overlay Desktop is the Electron macOS client for Overlay. It provides voice input, chat, notes, files, and permissioned agent operations on Apple Silicon.

## Surfaces

| Surface                | Role                                            |
| ---------------------- | ----------------------------------------------- |
| Main / overlay windows | App shell, settings, launcher                   |
| Chat                   | Permissioned host tools + hosted models         |
| Notebook               | Local notes with optional cloud sync            |
| Browser                | Interactive browsing; agent browser is isolated |
| Transcription          | Local and/or cloud speech-to-text               |

## Processes

* **Main** — trusted host capabilities, IPC, Keychain-backed secrets, policy.
* **Preload** — narrow typed bridge (`window.bridge` only).
* **Renderer** — React UI; no Node privileged APIs.

## Source

* Public repository: [LayerNorm/overlay-desktop](https://github.com/LayerNorm/overlay-desktop)
* Website: [getoverlay.io](https://getoverlay.io)
* Download (after Gate B): [getoverlay.io/download](https://getoverlay.io/download)

Hosted authentication, model policy, entitlements, billing, and usage accounting remain server-authoritative on Overlay Server.