C# is a versatile, object-oriented programming language developed by Microsoft as part of the .NET framework. It is designed to be simple and easy to use, promoting strong type-checking and a rich set of libraries, making it ideal for developing a wide range of applications, from desktop to mobile to web-based solutions. C# supports modern programming paradigms, including asynchronous programming, which enhances performance in applications with high I/O operations. Its integration with the .NET ecosystem provides robust tools, such as Visual Studio, for debugging and deployment. Additionally, C# is continually evolving, with frequent updates that introduce new features and improvements, such as records, pattern matching, and nullable reference types, ensuring that developers can write clean, efficient, and maintainable code. Whether you're building enterprise-level software, video games with Unity, or cloud services, C# offers a powerful and flexible platform for application development.
View the most prominent open source C# projects in the list below. Click on a specific project to view its alternative or complementary packages. Make comparisons and find the best package for your app.
- The Free Software Media System - Server Backend & API☆48,258Updated this week
- A modern file manager that helps users organize their files and folders.☆41,625Updated last week
- 🔥LeetCode solutions in any programming language | 多种编程语言实现 LeetCode、《剑指 Offer（第 2 版）》、《程序员面试金典（第 6 版）》题解☆35,584Updated this week
- ShareX is a free and open-source application that enables users to capture or record any area of their screen with a single keystroke. It…☆35,496Updated this week
- Windows Calculator: A simple yet powerful calculator that ships with Windows☆30,850Updated last month
- A Swiss Army knife for developers.☆30,871Updated 3 weeks ago
- Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The most popular .NET UI client technology☆29,959Updated last week
- Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics☆24,639Updated 2 months ago
- Pulumi - Infrastructure as Code in any programming language 🚀☆24,638Updated this week
- 🛠「Watt Toolkit」是一个开源跨平台的多功能 Steam 工具箱。☆24,398Updated this week
- A collection of awesome .NET core libraries, tools, frameworks and software☆21,068Updated 10 months ago
- A collection of awesome .NET libraries, tools, frameworks and software☆21,074Updated 4 months ago
- The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.☆20,209Updated this week
- Roadmap to becoming an ASP.NET Core developer in 2026☆19,516Updated last week
- ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structure…☆18,694Updated last month
- PEASS - Privilege Escalation Awesome Scripts SUITE (with colors)☆19,215Updated this week
- This repo is used for servicing PR's for .NET Core 2.1 and 3.1. Please visit us at https://github.com/dotnet/runtime☆17,540Updated 3 years ago
- Clean Architecture Solution Template: A proven Clean Architecture Template for ASP.NET Core 10☆17,962Updated 3 weeks ago
- Bitwarden infrastructure/backend (API, database, Docker, etc).☆17,972Updated last week
- Free and open-source software that allows users to set animated desktop wallpapers and screensavers powered by WinUI 3.☆18,125Updated 2 weeks ago
- Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and Open…☆16,387Updated last week
- Amplication brings order to the chaos of large-scale software development by creating Golden Paths for developers - streamlined workflows…☆16,007Updated this week
- Um guia extenso de informações com um vasto conteúdo de várias áreas para ajudar, agregar conhecimento e retirar dúvidas, nesse guia você…☆15,538Updated last year
- Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with be…☆14,129Updated last week
- Generate types and converters from JSON, Schema, and GraphQL☆13,592Updated 3 months ago
- A wrapper executable that can run any executable as a Windows service, in a permissive license.☆13,666Updated last week
- One framework for creating powerful cross-platform games.☆13,127Updated last week
- C# application with primary purpose of farming Steam cards from multiple accounts simultaneously.☆13,031Updated this week
- The official repo for the design of the C# programming language☆12,480Updated this week
- ASP.NET Boilerplate - Web Application Framework☆11,996Updated last week
- Mono open source ECMA CLI, C# and .NET implementation.☆11,421Updated last year
- Video game library manager with support for wide range of 3rd party libraries and game emulation support, providing one unified interface…☆12,377Updated last week
- Powerful .NET library for benchmarking☆11,341Updated this week
- A tool for generating code based on a GraphQL schema and GraphQL operations (query/mutation/subscription), with flexible support for cust…☆11,213Updated last week
- 🏞 A lightweight, versatile image viewer☆12,163Updated last month
- Apache Thrift☆10,893Updated last week
- A distributed transaction framework, supports workflow, saga, tcc, xa, 2-phase message, outbox patterns, supports many languages.☆10,818Updated last month
- A rewrite of the old legacy software "depends.exe" in C# for Windows devs to troubleshoot dll load dependencies issues.☆11,114Updated last year
- Cross Platform Terminal UI toolkit for .NET☆10,689Updated this week
- xLua is a lua programming solution for C# ( Unity, .Net, Mono) , it supports android, ios, windows, linux, osx, etc.☆10,004Updated 2 months ago