# Opendisplay (open-source desktop utility)

> Opendisplay is a free, open-source desktop utility for macOS. Use an iPhone, iPad, or spare Mac as a true second display for your Mac without restrictions. It has 5,121 GitHub stars and is released under the GPL-3.0 license. Its source code is on GitHub at peetzweg/opendisplay.

Turn your spare Apple devices into second monitors for your Mac — free, open source, no subscription. iPhone, iPad, and spare Macs. A self-hosted alternative to Apple Sidecar, Duet Display, and Luna Display: true extended display (not just mirroring), Retina-sharp, over USB or WiFi, with touch and scroll input.

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/peetzweg/opendisplay |
| Platforms | macOS |
| Interface | desktop GUI |
| GitHub stars | 5,121 |
| License | GPL-3.0 (open source) |
| Replaces | n/a |
| Language | Swift |
| Website | https://opendisplay.app |
| Official | no |
| Category | Archivers, cleaners & system utilities |
| Latest release | v1.25.0 (Oct 1, 2026) |
| Last commit | Oct 1, 2026 |

## Install

Download a build for your system from the project's releases (https://github.com/peetzweg/opendisplay/releases) or website, or build it from source by following the README.

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