You have various options to mirror or cast screen from your PC to other devices and computers. Deskreen is one of the best you can find. It is free, open source, wireless and easy to use. You don’t have to pay or even signing up a free account in order to use it. It is also ads free, works for Windows, Mac and Linux.
Mirroring your computer to another is pretty easy. You just need to download and install the screen sharing software on the source computer, then use a web browser on the destination computer as the client to receive the screen sharing from the first computer. If you want to wirelessly extend your PC display to Mac, you will have to buy a Dummy Display Plug or Virtual Display Plug. It is a small plug that looks similar to USB Flash Drive. It is small and very cheap. When you plug it in to your computer, it will make your computer think that an external display is connected. We will discuss PC screen mirroring and extending separately below.
Before we get started, go and get Deskreen for Windows here on to your computer. As we mentioned above, it is free and open source. Works with major Windows OS.
Mirror your whole PC screen to Mac
Run Deskreen on your computer. You will get a QR code and an IP address on its home screen.
Connect your Mac to the same Wi-fi network as your PC. Then launch Safari or other desktop browser you have installed on the Mac. Type in the IP address from Deskreen and visit. Then you will have the option in Deskreen for Windows to view and accept the connection request from the Mac. Click the Allow button, then you will have the options to Share Entire Screen or Share Application Window. The former is to share the whole PC display with Mac, same content on both computers; the latter is to select and share certain Windows program with Mac.
Select the screen source in Deskreen on your PC, preview and finally click Confirm button to start sharing your computer screen with Mac.
Extend your PC display to Mac
To enable display Extend mode in Windows 10, press Windows key + P to open up the Project menu at the right side of your PC screen. Click to select Extend.
Then launch Deskreen on your Windows PC. You will get the QR code and IP address on its home screen. Connect your Mac to the same Wi-fi network as your Windows computer. Open Safari or other desktop browser you have on the Mac. Type in the IP address from Deskreen and visit from your desktop browser on Mac. Deskreen on your Windows computer will prompt the connection request from the Mac. Click the Allow button, then you will have the options to Share Entire Screen or Share Application Window.
Choose Share Entire Screen, this time you will see both the primary and secondary screens . See below screenshot.
Screen 1 is the display of your Windows PC, Screen 2 is the second screen for your PC which we are going to mirror to the Mac. Click to select Screen 2, preview the screen and click Confirm button to starting sharing it with the other computer.
Move a window or program from PC screen to Mac
Once you have extended your PC display to Mac, you can to move a window or program from PC screen to Mac. Just click the title bar of the window you’d like to move, then drag it to the right edge of the PC screen. You will then see the window disappear from the Windows computer and appears on Mac screen. To move it back to the first display, simply drag the window back in the opposite direction.
Of course, you can choose how to arrange your PC and Mac screen from the Windows System Settings. Click Windows Start menu, choose Settings to open Settings on your Windows PC. Click System > Display. In the Select and rearrange displays section, press and hold a display thumbnail, then drag to rearrange it. You can place the Mac screen to the right, left, above or below of your PC screen.