uxplay

Highlights:

• GPLv3, open source.
• Originally supported only AirPlay Mirror protocol, now has added support for AirPlay Audio-only (Apple Lossless ALAC) streaming from current iOS/iPadOS clients. There is no support for Airplay2 video-streaming protocol, and none is planned.
• macOS computers (2011 or later, both Intel and "Apple Silicon" M1/M2 systems) can act either as AirPlay clients, or as the server running UxPlay. Using AirPlay, UxPlay can emulate a second display for macOS clients.
• Support for older iOS clients (such as 32-bit iPad 2nd gen., iPod Touch 5th gen. and iPhone 4S, when upgraded to iOS 9.3.5, or later 64-bit devices), plus a Windows AirPlay-client emulator, AirMyPC.
• Uses GStreamer plugins for audio and video rendering (with options to select different hardware-appropriate output "videosinks" and "audiosinks", and a fully-user-configurable video streaming pipeline).
• Support for server behind a firewall.
• Raspberry Pi support both with and without hardware video decoding by the Broadcom GPU. Tested on Raspberry Pi Zero 2 W, 3 Model B+, 4 Model B, and 5.
• Support for running on Microsoft Windows (builds with the MinGW-64 compiler in the unix-like MSYS2 environment).