opendisplay
A free macOS app that turns an iPhone, iPad or spare Mac into a real extended second display for your Mac. It is an open-source alternative to Sidecar and Duet Display.
Pick a small issue you can reproduce, then fix it with your AI coding agent.
Share on XLicense: GPL-3.0
Overview
OpenDisplay is a free, open-source macOS app that turns an iPhone, iPad or spare Mac into a real extended second display for your Mac. macOS treats the device as a separate monitor, not a mirror. It connects over USB or WiFi and supports touch input. It is presented as a self-hosted alternative to Apple Sidecar, Duet Display and Luna Display, with no account or dongle.
Key features
- True display extension, with mirroring as an optional mode
- USB connection or WiFi found automatically through Bonjour
- Retina resolution matched to the device panel
- Touch input: tap to click, drag and two-finger scroll
- Spare Mac as a display through a small Receiver app
Best for
Mac users who want an extra screen from a device they already own without a subscription. USB needs a data-capable cable, and WiFi needs Local Network permission on both devices.
- Upstream
- peetzweg/opendisplay
- Fork on GitHub
- Guo-astro/opendisplay
- Upstream stars
- 5.3k
- Category
- Apps and everyday utilities
- Language
- Swift
- License
- GPL-3.0
- Forked
- 2026-09-28
- Sync status
- Updated by last syncLast synced 2026-10-19
More in Apps and everyday utilities
ATV Optimizer manages Android TV devices over ADB. Use its desktop app or PowerShell script to disable unwanted apps and adjust supported device settings.
Forked 2026-10-18Last synced 2026-10-19Custom license (see repository)Apps and everyday utilitiesGitHub
View and control Mac windows or the desktop from an iPhone or iPad using touch, a trackpad, or a keyboard. Connect without an account or intermediary server.
Forked 2026-10-16Last synced 2026-10-19License: Apache-2.0Apps and everyday utilitiesGitHub
Sofatap turns an iPhone into a remote touchpad and text or voice input surface for a Windows, Mac, or supported Linux computer. It lets you control a computer connected to a TV from the sofa.
Forked 2026-10-16Last synced 2026-10-19License: MITApps and everyday utilitiesGitHub
Horizon is a personal AI news radar that generates daily briefings in English and Chinese. It helps readers keep up with news through concise briefings for personal reading.
Forked 2026-10-15Last synced 2026-10-19License: MITApps and everyday utilitiesGitHub