opendisplay

Free, open-source Sidecar/Duet alternative — use your iPhone or iPad as a true second monitor for your Mac over USB or WiFi. Low latency H.264, Retina HiDPI, touch input.

5.2k 343

GPL-3.0

last commit 2026-07-13

duet-display external-display ipad iphone macos screen-extension screencapturekit second-monitor sidecar swift

Website Source

About

Use an iPhone, iPad, or spare Mac as a true second display for your Mac without restrictions.

Languages

Swift83.5%TypeScript7.5%CSS3%HTML2.4%Python1.5%Shell0.8%Ruby0.7%Objective-C0.4%JavaScript0.3%

Contributors6

231

Free alternative to Duet Display

opendisplay is a free, open-source alternative to Duet Display. Here's why:

📱 iPhone/iPad as monitor
⚡️ Low latency H.264
🔍 Retina HiDPI support
👆 Touch input enabled
🔌 USB & WiFi connect

See all open-source alternatives to Duet Display

Comments Theme

Platforms

macOS

Web

Interface

Web

Install

npm

Gem

Keywords

slug: opendisplay