4.2 Avalonia is the open source alternative to WPF
Wasabi Wallet

https://relay.towardsliberty.com/d85efec4b51ea47c954a7b814e0454ffe20d2ee796f48b804e6a223beacdcd8e.mp4
https://www.youtube.com/watch?v=fhYkuUD5gRg