# OpenDisplay

> iPad or iPhone as a Mac second monitor — Turns an iPhone or iPad into a real second monitor for a Mac.

- Page: https://tesign.com/en/item/opendisplay/
- JSON: https://tesign.com/en/item/opendisplay/index.json
- Korean Markdown: https://tesign.com/item/opendisplay/index.md
- Generated: 2026-09-17 01:56 UTC

## RANKS

- HARDWARE #2 (As of 2026-09-16 21:00 UTC)

## Numbers

- 4,026 stars — checked on GitHub 2026-09-15 19:33 UTC (+42 observed since the check)
- 7-day +165 observed via GH Archive (as of 2026-09-16 21:00 UTC)
- 24h +36 ★ · 30d +172 ★ (as of 2026-09-16 21:00 UTC)
- Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours.

## AT A GLANCE

- LICENSE: GPL-3.0 (copyleft) — https://spdx.org/licenses/GPL-3.0.html
- USAGE: Use freely. Release your source if you redistribute (copyleft).
- OPEN SOURCE: YES
- LANGUAGE: Swift
- PLATFORM: macos · ios
- CATEGORY: HARDWARE · PRODUCTIVITY
- Tags: macos · display · ios
- How to start: Install to use
- SOURCES: GitHub https://github.com/peetzweg/opendisplay
- INSTALL: https://opendisplay.app/

## ACTIVITY

- Last commit: 2026-09-15 10:44 UTC
- Latest release: v1.19.0 (2026-09-01)
- Contributors: 6
- Open issues (incl. PRs): 142
- Made by: an individual
- Checked on GitHub: 2026-09-15 19:33 UTC

## TESIGN TAKE

Turns an iPhone or iPad you already own into a true extended display with no account or dongle.

## WHY IT MATTERS

Adding one more screen to a Mac usually starts with buying a device or paying for an app. opendisplay connects an iPhone or iPad you already own over USB or WiFi and uses it as a second monitor. It states low-latency H.264, Retina HiDPI and touch input. Written in Swift and published under GPL-3.0.

## BUILD FROM THIS

- A portable setup that adds a second screen in a meeting room
- A desk layout with the iPad kept for tool panels only

## WHO IT'S FOR

- Mac user — adds a second screen in a meeting room or café
- Solo business — wants a second monitor without a paid app
- Developer — keeps the iPad for docs and tool panels only

## START IN 5 MINUTES

```
# Mac: open OpenDisplay.dmg from the latest release, drag to Applications (macOS 14+)
# iPhone/iPad: install the app via the TestFlight public beta (iOS 16+)
# Connect a data-capable USB cable, then allow Screen Recording and Accessibility
```

## CAVEATS

- Uses the private CGVirtualDisplay API, so a macOS update may break it
- The iOS app installs via TestFlight or your own build, not the App Store
- Encrypted WiFi transport is still on the roadmap

## RECEIPT

- FIRST SEEN BY TESIGN: 2026-09-13 07:43 UTC
- AT SOURCE: 2026-06-10 09:08 UTC
- KEPT: 2026-09-13 11:32 UTC
- Published on TESIGN: 2026-09-13 11:32 UTC
- Text last updated: 2026-09-15 04:36 UTC

## How to read this

- This file was produced by the same build, from the same data, as the tesign.com item page. The text is editorial; the numbers are stored observations.
- null in the JSON means not observed — never zero. The Markdown writes [unconfirmed] for it.
- Star total = the value last checked on GitHub (stars_checked_at) + increases observed via GH Archive since. The 24h · 7d · 30d gains are GH Archive hourly events summed to the reference time (as_of). No score of ours.
- A summary, not legal advice.

[Image] https://tesign.com/img/opendisplay-ff7752afa9.png