.NET

Veldridmellinoe/veldrid

A cross-platform, graphics API-agnostic rendering and compute library for .NET, providing a unified GPU interface.

BlzhawkTASEmulators/BizHawk

A multi-system emulator with advanced recording, debugging, and tool-assisted speedrunning (TAS) features.

NUnitnunit/nunit

A unit-testing framework for all .NET languages, supporting macOS, Linux, and Windows.

Audit.NETthepirat000/Audit.NET

An extensible framework to audit executing operations in .NET and .NET Core, generating detailed audit logs with evidence for reconstruction.

Modern UI for WPF - MUIfirstfloorsoftware/mui

A set of controls and styles that transform WPF applications into modern-looking apps with customizable themes and navigation.

DbUpDbUp/DbUp

A .NET library for deploying and versioning SQL database changes across multiple database systems.

EventFloweventflow/EventFlow

Async/await first CQRS+ES and DDD framework for .NET designed to be easy to use and highly configurable.

WalletWasabizkSNACKs/WalletWasabi

An open-source, non-custodial, privacy-focused Bitcoin wallet for desktop (Windows, Linux, and Mac).

Open Live WriterOpenLiveWriter/OpenLiveWriter

An open-source desktop application for writing, previewing, and publishing blog posts to various platforms.

EFCorePowerToolsErikEJ/EFCorePowerTools

Visual Studio extension and CLI tool for Entity Framework Core reverse engineering, migrations, and model visualization.

PeachPiepeachpiecompiler/peachpie

A modern PHP compiler and runtime for .NET/.NET Core, enabling PHP code to run within the .NET ecosystem.

ZeroFormatterneuecc/ZeroFormatter

A high-performance C# serializer with infinitely fast deserialization for .NET, .NET Core, and Unity.

BrighterBrighterCommand/Brighter

A .NET command dispatcher and processor framework for building loosely coupled applications and microservices with in-process and out-of-process messaging.

CacheManagerMichaCo/CacheManager

An open-source caching abstraction layer for .NET that simplifies complex caching scenarios with multi-layer support and advanced features.

Docker.DotNetMicrosoft/Docker.DotNet

A fully asynchronous .NET (C#) client library for interacting with the Docker Remote API.

onegetOneGet/oneget

A unified package manager for Windows, Linux, and macOS that provides a common interface for software discovery, installation, and inventory.

Utf8Jsonneuecc/Utf8Json

A high-performance, zero-allocation JSON serializer for C# that reads/writes directly to UTF8 binary.

CSCorefiloe/cscore

A comprehensive .NET audio library for playing, recording, encoding, decoding, and real-time processing of audio in C#.

EntityFramework-Pluszzzprojects/EntityFramework-Plus

Extends Entity Framework with performance-enhancing features like batch operations, caching, auditing, and query optimization.

CommandLineUtilsnatemcmaster/CommandLineUtils

A .NET library for building command-line applications with argument parsing, validation, and help text generation.

RabbitMQ.NETrabbitmq/rabbitmq-dotnet-client

Official .NET client library for RabbitMQ, enabling .NET applications to communicate with RabbitMQ message brokers.

SandcastleEWSoftware/SHFB

A standalone GUI, Visual Studio integration package, and MSBuild tasks for building help files with Sandcastle tools.

Oqtaneoqtane/oqtane.framework

An open-source CMS and application framework for building modern web, mobile, and desktop applications with Blazor and .NET.

Helix Toolkithelix-toolkit/helix-toolkit

A collection of 3D components and engines for .NET, supporting WPF, WinUI, and Avalonia with DirectX 11.

NBomberPragmaticFlow/NBomber

A distributed load-testing framework for .NET that tests any system regardless of protocol or semantic model using plain C# or F#.

Jwt.Netjwt-dotnet/jwt

A comprehensive JWT (JSON Web Token) implementation for .NET with support for encoding, decoding, and ASP.NET Core integration.

nhibernate-corenhibernate/nhibernate-core

A mature, open-source object-relational mapper for the .NET framework, enabling .NET applications to interact with databases using object-oriented paradigms.

NServiceBusparticular/nservicebus

A .NET framework for building async microservices with support for multiple message queues and databases.

NServiceBusParticular/NServiceBus

A .NET framework for building async microservices with message-based communication, supporting multiple cloud providers and on-premises deployment.

F#fsharp/fsharp

Alternative packaging of the F# compiler, tools, and libraries for .NET Core and .NET Framework/Mono.

Jilkevin-montrose/Jil

A high-performance JSON serializer and deserializer for .NET, built on Sigil with extensive optimization.

WebApiClientdotnetcore/WebApiClient

A high-performance REST API client library for .NET with interface-based declaration, AOT support, and advanced features.

Paketfsprojects/Paket

A dependency manager for .NET with support for NuGet packages and Git repositories.

FoundatioFoundatioFx/Foundatio

A collection of pluggable foundation blocks for building loosely coupled, distributed .NET applications.

FoundatioFoundatioFx/Foundatio

A collection of pluggable foundation blocks for building loosely coupled, distributed .NET applications.

Foundatioexceptionless/Foundatio

A collection of pluggable foundation blocks for building loosely coupled, distributed .NET applications.