Open Source C# Projects

List of open source C# projects and apps for beginners, intermediate and advanced programmers to learn from. Find interesting app or project for you and start contributing. Learn C# by doing projects.

If you know valuable project that deserves to be on this list, edit README file and add it!

List

Algorithm

• Adaptive Huffman Encoder/Decoder - Implementation of adaptive Huffman Encoder and Decoder
• C# Algorithms - A C# plug-and-play class-library project of standard Data Structures and Algorithms. It contains 35+ Data Structures and 30+ Algorithms designed as Object-Oriented isolated components.

Authentication and Authorization

• ASP.NET Core Identity - ASP.NET Core Identity is the membership system for building ASP.NET Core web applications, including membership, login, and user data.
• OAuth - A public domain OAuth library

CLR

• CoreCLR - .NET Core Common Language Runtime

CMS

• DNN - formerly DotNetNuke - leading open source web content management platform (CMS) in the Microsoft ecosystem. The product is used to build professional looking and easy-to-use commercial websites, social intranets, community portals, or partner extranets.
• nopCommerce - Free open-source ecommerce shopping cart (ASP.NET MVC)
• Umbraco - The simple, flexible and friendly ASP.NET CMS used by more than 400.000 websites

Code Metrics

• BenchmarkDotNet - Powerful .NET library for benchmarking

Cryptography and hash function

• BouncyCastle - Implementation of cryptography primitives
• libsodium - A C# wrapper around libsodium

Database

• Entity Framework Core - Entity Framework Core is a lightweight and extensible version of the popular Entity Framework data access technology
• NHibernate - NHibernate Object Relational Mapper
• StackExchange.Redis - General purpose redis client

Decompiler

• dnSpy - dnSpy is a debugger and .NET assembly editor. You can use it to edit and debug assemblies even if you don't have any source code available.

DirectX

• SharpDX - SharpDX is an open-source project delivering the full DirectX API for .Net on all Windows platforms

Framework

• Blazor - Blazor is an experimental .NET web framework using C#/Razor and HTML that runs in the browser with WebAssembly
• CoreFX - CoreFX for .NET Core
• Mono - Mono open source ECMA CLI, C# and .NET implementation.

IoC

• Autofac - Autofac is an IoC container for Microsoft .NET. It manages the dependencies between classes so that applications stay easy to change as they grow in size and complexity.
• Ninject - Ninject is a lightning-fast, ultra-lightweight dependency injector for .NET applications.
• Unity - he Unity Container (Unity) is a lightweight, extensible dependency injection container.

Loggin

• NLog - NLog - Advanced and Structured Logging for Various .NET Platforms

Machine Learning

• ML.NET - ML.NET is an open source and cross-platform machine learning framework for .NET.

Mapping

• AutoMapper - A convention-based object-object mapper in .NET

Serialization

• Newtonsoft.Json - Json.NET is a popular high-performance JSON framework for .NET

Testing

• Fluent Assertions - Fluent API for asserting the results of unit tests
• Moq - The most popular and friendly mocking framework for .NET
• NUnit - NUnit is a unit-testing framework for all .NET languages.
• Rhino Mocks - Dynamic Mocking Framework for .NET

Tool

• dotnet-outdated - A .NET Core global tool to display outdated NuGet packages in a project

Web Servers

• Kestrel - A cross platform web server for ASP.NET Core.