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 ## C#
 
 - [Cake](https://github.com/cake-build/cake) _(label: Good-first-issue)_ <br> Cake (C# Make) is a free and open source cross-platform build automation system with a C# DSL for tasks such as compiling code, copying files and folders, running unit tests, compressing files and building NuGet packages.
+- [MvvmCross](https://github.com/MvvmCross/MvvmCross) _(label: first-timers-only)_ <br> The .NET MVVM framework for cross-platform solutions, including Xamarin.iOS, Xamarin.Android, Windows and Mac.
 - [osu!](https://github.com/ppy/osu) _(label: good first issue)_ <br> Music game. Rhythm is just a click away!
 - [Spectre.Console](https://github.com/spectreconsole/spectre.console) _(label: good first issue)_ <br> A .NET library that makes it easier to create beautiful console applications.
 - [Uno Platform](https://github.com/unoplatform/uno) _(label: good first issue)_ <br> OSS project for creating pixel-perfect, single-source C# and XAML apps which run natively on iOS, Android, macOS, Linux and Web via WebAssembly.