For .NET, Eto is a good option. It's cross-platform and supports the native toolkits of the platforms it supports: https://github.com/picoe/Eto https://github.

For .NET, Eto is a good option. It's cross-platform and supports the native toolkits of the platforms it supports: https://github.com/picoe/Eto https://github.com/picoe/Eto There's also Avalonia, but it's currently in beta: http://avaloniaui.net/ http://avaloniaui.net/