Open source dotnet projects

Self-hosted media server for movies, music, and more

A modern file manager that helps users organize their files and folders.

A browser automation framework and ecosystem.

Develop Desktop, Embedded, Mobile and WebAssembly apps with C# and XAML. The future of .NET UI

Infrastructure as code in your favorite language

Secure password management for individuals and businesses

Open Source real-time strategy game engine for early Westwood games such as Command & Conquer: Red Alert written in C# using SDL and OpenGL. Runs on Windows, Li

Free, open-source framework for cross-platform game development

A framework for building, orchestrating and deploying AI agents and multi-agent workflows with support for Python and .NET.

Technitium DNS Server

LiteDB - A .NET NoSQL Document Store in a single data file

.NET API Gateway

The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.

Interactive plotting library for .NET

NLog - Flexible and Structured Logging for various .NET Platforms

The framework for building with WebAssembly (wasm). Easily & securely load wasm modules, move data, call functions, and build extensible apps.

Static site generator for .NET API documentation.

A simple, cross platform, modulith ecommerce system built on .NET

Free and open-source PDF editor for Windows with a built-in PDF 2.0 engine. View, annotate, OCR, merge, split, crop, rotate, compare, edit text, draw, sign, fil

:cake: Cake (C# Make) is a cross platform build automation system.

OpenAPI based HTTP Client code generator

Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF

Privacy-first password manager with built-in email aliasing. Fully encrypted and self-hostable.

Free Open Source Reporting tool for .NET6/.NET Core/.NET Framework that helps your application generate document-like reports

A cross-platform C# editor and playground.

Open-source feature flag management for seamless deployments

A modular, scalable and ultra-fast open-source all-in-one eCommerce platform built on ASP.NET Core 10

WireMock.Net is a flexible product for stubbing and mocking web HTTP responses using advanced request matching and response templating. Based on WireMock Java,

E-commerce platform built with ASP.NET Core using MongoDB for NoSQL storage

Blogifier is an open-source publishing platform Written in ASP.NET and Blazor WebAssembly. With Blogifier make a personal blog or a website.

Cross-platform video editing (compositing) software.

Instant SECURE Full Stack Apps and AI Agents

Adding `.Dump()` extension methods to Console Applications, similar to LinqPad's.

OpenBudgeteer is a budgeting app based on the Bucket Budgeting Principle

Apache Log4net is a versatile, feature-rich, efficient logging API and backend for .NET

Cofoundry is an extensible and flexible .NET Core CMS & application framework focusing on code first development

🚀 A future-proof enterprise web CMS supporting both headless and decoupled approaches. Build any type of app with customizable APIs on ASP.NET Core/.NET Core.

DnsClient.NET is a simple yet very powerful and high performant open source library for the .NET Framework to do DNS lookups

Workflow Automation Engine

Mass processing data with a complete ETL for .net developers

An open-source toolbox that takes a game all the way "from idea → built → live" — Unity/Godot/Cocos/Laya clients + one .NET server. | 开源游戏全流程工具箱：Unity/Godot/Coc

OpenID/Connect, OAuth2, WS-Federation and SAML 2.0 server based on Duende IdentityServer and ITFoxtec Identity SAML 2.0 with its admin UI

A Tumblr and Twitter Blog Backup Application

Windows Event Log tooling for PowerShell and .NET: typed queries, reporting, export, WEC, automation, and the PSEventViewer module.

.NET Client Library for Datadog APM

Write your pipelines in C# !

Camelot is a cross-platform file manager written in C#

Community-driven platform built for transparency