#swift #duet_display #external_display #ipad #iphone #macos #screen_extension #screencapturekit #second_monitor #sidecar #swift #videotoolbox #virtual_display

OpenDisplay turns an iPhone, iPad, or spare Mac into a real second screen for your Mac. It is free, open source, and needs no subscription, account, or extra dongle. It works over USB or Wi‑Fi, gives sharp Retina-quality display, and lets you tap, drag, and scroll. This helps you get more screen space, keep windows visible, and use old Apple devices in a useful way.

https://github.com/peetzweg/opendisplay