# .NET Projects There are many .NET open source projects. You can always use a search engine to find projects, and that's a good approach. This list is an intended to provide a showcase for projects that want it. It is itendeded to be community maintained. PR a change in and it will be accepted (modulo duplicates). * Platforms * [.NET Core](https://github.com/dotnet/core) * [Mono Project](https://github.com/mono/) * [Castle Project](https://github.com/castleproject) * Web Platforms * [Umbraco](http://umbraco.com/) * [DotNetNuke](https://dotnetnuke.codeplex.com/) * Libraries * [JSON.NET](http://json.net/) * [NodaTime](http://nodatime.org/) * [Cimbalino](http://cimbalino.org/) * [DotNetOpenAuth](https://github.com/DotNetOpenAuth) * [FluentValidation](https://github.com/JeremySkinner/FluentValidation) * [Splat](https://github.com/paulcbetts/splat) * [RestSharp](http://restsharp.org/) * Mvvm * [MVVM Cross](https://github.com/MvvmCross/MvvmCross) * [MVVM Light Toolkit](http://www.mvvmlight.net) * [Catel](http://catelproject.com/) * [Simple Mvvm Toolkit](http://simplemvvmtoolkit.codeplex.com/) * [ReactiveUI](https://github.com/reactiveui/ReactiveUI) * [Caliburn Micro](http://caliburnmicro.com/) * Tools * [Fody](https://github.com/Fody/Fody) * [Glimpse](http://getglimpse.com) * [Mini Profiler](http://miniprofiler.com/) * [Protobuf-net](https://code.google.com/p/protobuf-net/) * [ILSpy](http://ilspy.net/) * Testing * [NUnit](https://github.com/nunit/nunit) * [xUnit](https://github.com/xunit/xunit) * [moq](https://github.com/Moq/moq4) * Dependency Injection * [TinyIoC](https://github.com/grumpydev/TinyIoC) * [NInject](http://www.ninject.org/) * [Autofac](http://autofac.org/) * [Funq](https://funq.codeplex.com/) * Data Access * [Simple Data](https://github.com/markrendle/Simple.Data) * [Dapper](https://github.com/StackExchange/dapper-dot-net) * [NHibernate](https://github.com/nhibernate) * [Sqlite-net](https://github.com/praeclarum/sqlite-net) * Games * [MonoGame](http://monogame.net) This list is just a starting point - also take a look at all the projects on [CodePlex](http://www.codeplex.com/) and on [GitHub Trending C#](https://github.com/trending?l=csharp). Thanks to @slodge for providing the initial list.