A lightweight online game framework

微信公众平台SDK Senparc.Weixin for C#，支持.NET Framework及.NET Core。已支持微信公众号、小程序、小游戏、企业号、企业微信、开放平台、微信支付、JSSDK、微信周边等全平台。 WeChat SDK for C#.

The Cross Platform Game Engine

Windows Calculator: A simple yet powerful calculator that ships with Windows

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TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

The https://www.freeCodeCamp.org open source codebase and curriculum. Learn to code for free together with millions of people.

Visual Studio Code

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EventMachine: fast, simple event-processing library for Ruby programs

Machine learning, computer vision, statistics and general scientific computing for .NET

Signals is a new approach for AS3 events, inspired by C# events and signals/slots in Qt.

Modern AS3 Game Engine

AForge.NET Framework is a C# framework designed for developers and researchers in the fields of Computer Vision and Artificial Intelligence - image processing, neural networks, genetic algorithms, …

Unity C# reference source code

This repo contains the .NET Core foundational libraries, called CoreFX. It includes classes for collections, file systems, console, XML, async and many others. We welcome contributions.

Mono open source ECMA CLI, C# and .NET implementation.

The official repo for the design of the C# programming language

The .NET Compiler Platform ("Roslyn") provides open-source C# and Visual Basic compilers with rich code analysis APIs.

A Unity C# animation engine. HOTween v2

C# functional language extensions - a base class library for functional programming

GUI Diff Tool for Excel

Extension for the existing Unity memory profiler project

a .NET Core library that can read/write Office formats without Microsoft Office installed. No COM+, no interop.

Lightweight and fast library written in C# for reading Microsoft Excel files

SuperSocket is a light weight, cross platform and extensible socket server application framework.

比较全面的c#帮助类，各种功能性代码。

C# Extension Methods | .NET Open Source & Free Library.

De Monster Debugger was created by Digital Design Agency De Monsters Amsterdam to assist in debugging applications created in Flash, Flex and AIR.