XAML 1

Open-source UI framework for .NET web apps OpenSilver is a free, open-source UI framework for building modern .NET web applications in C# and XAML. It enables building applications that run on Windows, Android, Mac, Google Chrome, Firefox, and Safari. OpenSilver offers compatibility with Microsoft Silverlight and extensive WPF support, allowing developers to code in C#, VB, or F# and leverage enterprise-grade controls and libraries.