AvaloniaUI

AvaloniaUI OÜ develops Avalonia, an MIT-licensed cross-platform UI framework for .NET. Using XAML and C#, development teams can build desktop, mobile, and WebAssembly applications for Windows, macOS, Linux, iOS, and Android from a shared codebase. The company also offers enterprise support, professional services, migration guidance, developer tooling, and optional UI components, including controls for charts, data grids, PDF viewing, and media playback.