* Uno is a vendor-led Windows/WinUI inspired and based UI platform that was originally concieved as a way to port modern Windows Apps to other platforms. Since then, it's evolved a lot of different capabilities and paradigms, but ultimately is basically cross-plat WinUI with extensions.
* Avalonia is a OSS platform concieved as WPF with some of the warts removed, and cross platform. It uses a lookless theming and drawing primites instead of native APIs/Controls to render it's UI.
* Maui is a .NET/Msft-blessed platform that is basically a rebranding of Xamarin.Forms with some improvements and renewed investment. It also largely uses native APIs/controls, and has a contruction style that is kind of a mix between WPF and WinForms.
* Uno is a vendor-led Windows/WinUI inspired and based UI platform that was originally concieved as a way to port modern Windows Apps to other platforms. Since then, it's evolved a lot of different capabilities and paradigms, but ultimately is basically cross-plat WinUI with extensions. * Avalonia is a OSS platform concieved as WPF with some of the warts removed, and cross platform. It uses a lookless theming and drawing primites instead of native APIs/Controls to render it's UI. * Maui is a .NET/Msft-blessed platform that is basically a rebranding of Xamarin.Forms with some improvements and renewed investment. It also largely uses native APIs/controls, and has a contruction style that is kind of a mix between WPF and WinForms.