MassTransit by: Chris Patterson, Dru Sellers, Travis Smith

MassTransit is a distributed application framework for .NET, including support for MSMQ and RabbitMQ.

MassTransit.Analyzers by: Remco Blok, Chris Patterson

MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.

MassTransit.AspNetCore by: Chris Patterson

MassTransit AspNetCore Support, including Dashboard; MassTransit provides a developer-focused, modern platform for creating distributed applications without complexity.

MassTransit.RabbitMQ by: Chris Patterson, Dru Sellers, Travis Smith

This integration library adds support for RabbitMQ to MassTransit, a distributed application framework for .NET, including support for MSMQ and RabbitMQ.

MasterMemory by: neuecc

Embedded Readonly In-Memory Document Database for .NET, .NET Core and Unity.

MasterMemory.MSBuild.Tasks by: Cysharp

MSBuild Tasks of MasterMemory Code Generator.

MaterialDesignColors by: James Willock

ResourceDictionary instances containing standard Google Material Design swatches, for inclusion in a XAML application.

MaterialDesignThemes by: James Willock

ResourceDictionary instances containing Material Design templates and styles for WPF controls in .NET.

MathNet.Filtering by: Christoph Ruegg

Math.NET Filtering, providing methods and algorithms for signal processing and filtering in science, engineering and every day use. Supports .Net Framework 4.0 or higher and .Net Standard 1.3 or higher, on Windows, Linux and Mac.

MathNet.Numerics by: Christoph Ruegg, Marcus Cuda, Jurgen Van Gael

Math.NET Numerics is the numerical foundation of the Math.NET project, aiming to provide methods and algorithms for numerical computations in science, engineering and every day use. Supports .Net Framework 4.0 or higher and .Net Standard 1.3 or higher, on Windows, Linux and Mac.

MathNet.Numerics.Signed by: Christoph Ruegg, Marcus Cuda, Jurgen Van Gael

Math.NET Numerics is the numerical foundation of the Math.NET project, aiming to provide methods and algorithms for numerical computations in science, engineering and every day use. Supports .Net Framework 4.0 or higher and .Net Standard 1.3 or higher, on Windows, Linux and Mac. This package contains strong-named assemblies for legacy use cases (not recommended).

McMaster.Extensions.CommandLineUtils by: Nate McMaster

Command-line parsing API and utilities for console applications. Commonly used types: McMaster.Extensions.CommandLineUtils.CommandLineApplication McMaster.Extensions.CommandLineUtils.CommandOption McMaster.Extensions.CommandLineUtils.IConsole McMaster.Extensions.CommandLineUtils.Prompt McMaster.Extensions.CommandLineUtils.ArgumentEscaper A community-maintained fork of Microsoft.Extensions.CommandLineUtils, plus many enhancements.

MedallionTopologicalSort by: Michael Adelson

A fast implementation of topological sorting that supports stable sorting as well as breaking ties via ThenBy[Descending]

Mediator.SourceGenerator by: Martin Othamar

A high performance .NET Mediator pattern implemenation using source generation.

MediatR by: Jimmy Bogard

Simple, unambitious mediator implementation in .NET

MediatR.Extensions.Microsoft.DependencyInjection by: Jimmy Bogard

MediatR extensions for ASP.NET Core

MemoryPack.Generator by: Cysharp

Code generator for MemoryPack.

MessagePack by: neuecc

Extremely Fast MessagePack(MsgPack) Serializer for C#(.NET, .NET Core, Unity, Xamarin).

MessagePackAnalyzer by: neuecc, aarnott

Analyzers and source generator for MessagePack for C#. Verify rules for [MessagePackObject] and code fix for [Key]. A roslyn source generator for AOT or faster startup of applications that use the MessagePack nuget package.

Meziantou.Analyzer by: meziantou

A powerful C# Roslyn analyzer that uses static analysis to detect bugs, surface security issues, and enforce best practices—helping developers and AI write more reliable code.