# Turn your old devices into a second monitor

OpenDisplay is an open-source screen extension tool that turns iPhone or iPad devices into a second monitor for Mac computers. Providing low-latency image transmission via USB or wireless connection, the application offers a free alternative to Apple's own solution, Sidecar.

- ★ 3,786
- Swift
- GitHub Trending · 2026-09-15

## What you get
- Use iPhone or iPad devices as a real second screen for Mac.
- Provide low-latency image transmission via USB cable.
- A completely open-source solution that does not require a subscription or account.

## Installation
**Project build tool setup**

```
brew install xcodegen   # project generation
```


## If you don't write code
How can I configure my iPhone or iPad as a second monitor for my Mac using OpenDisplay? What are the network permissions and cable type requirements I should pay attention to when connecting my device via wired or wireless connection?

## Related dictionary terms

## Links
- GitHub repository →
- Read in Turkish →

---
Source: TreScout Discover · https://trescout.com/en/discover/opendisplay/