Updated README

README.md

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+# Xamarin.Forms Backends [![PRs Welcome](https://img.shields.io/badge/PRs-welcome-brightgreen.svg?style=flat-square)](http://makeapullrequest.com)
+
+A curated list of **community** Xamarin.Forms backends.
+
+## [Xamarin.Forms.Platforms.Blazor](https://github.com/legistek/Xamarin.Forms.Platforms.Blazor)
+
+A proof of concept for a Blazor backend render platform for Xamarin.Forms.
+
+![Xamarin.Forms.Platforms.Blazor](images/Xamarin.Forms.Platform.Blazor.png)
+
+## [Xamarin.Forms.Unity](https://github.com/aosoft/Xamarin.Forms.Unity)
+
+Xamarin.Forms for Unity (Platform implementation for Unity Game Engine).
+
+## [Xamarin.Forms.WinForms](https://github.com/aosoft/Xamarin.Forms.WinForms)
+
+Xamarin.Forms for Windows Forms (Platform implementation).
+
+## [xamarin-forms-gui.cs](https://github.com/jsuarezruiz/xamarin-forms-gui.cs)
+
+[gui.cs](https://github.com/migueldeicaza/gui.cs) is a simple UI toolkit for .NET, .NET Core and Mono and works on both Windows and Linux/Unix created by [Miguel de Icaza](https://github.com/migueldeicaza).
+
+This project is a small Xamarin.Forms backend of gui.cs. Yes, create **console** Apps with C# and XAML!.
+
+![xamarin-forms-gui.cs](images/forms-gui-dialogs.gif)