Opendisplay
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.
About 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.
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What is Opendisplay?
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.
Is Opendisplay free and open source?
Yes. Opendisplay's source code is public on GitHub under the GPL-3.0 license, which is OSI-approved or FSF-free, so you can use, copy and change it for free.
How do I install Opendisplay?
Download the installer for macOS from its GitHub Releases page (latest: v1.25.0) or the project website.
Is Opendisplay still maintained?
The repository's most recent commit was on Oct 1, 2026. appsgit only lists apps whose repository had a commit in the last six months.