librdkafka.redist by: Magnus Edenhill, edenhill

The Apache Kafka C/C++ client library - redistributable

Libuv by: Libuv

Multi-platform support library with a focus on asynchronous I/O.

LinqBridge by: Atif Aziz

With Visual Studio's multi-targeting and LINQBridge, you can write LINQ to Objects (local) queries using the full power of the C# 3.0 compiler and yet create programs that require only Microsoft .NET Framework 2.0. LINQBridge is a re-implementation of all the standard query operators introduced with Microsoft .NET Framework 3.5's System.Linq.Enumerable class.

LiteDB by: Maurício David

LiteDB - A lightweight embedded .NET NoSQL document store in a single datafile

LiveCharts.Wpf by: Beto Rodriguez

Simple, flexible, interactive and powerful data visualization for Wpf

log4net by: The Apache Software Foundation

log4net is a tool to help the programmer output log statements to a variety of output targets. In case of problems with an application, it is helpful to enable logging so that the problem can be located. With log4net it is possible to enable logging at runtime without modifying the application binary. The log4net package is designed so that log statements can remain in shipped code without incurring a high performance cost. It follows that the speed of logging (or rather not logging) is crucial. At the same time, log output can be so voluminous that it quickly becomes overwhelming. One of the distinctive features of log4net is the notion of hierarchical loggers. Using these loggers it is possible to selectively control which log statements are output at arbitrary granularity. log4net is designed with two distinct goals in mind: speed and flexibility

Magnum by: Chris Patterson, Dru Sellers

Magnum is a library for the larger than average developer

MahApps.Metro by: Jan Karger, Bastian Schmidt, Dennis Daume, Brendan Forster, Alex Mitchell, Paul Jenkins, Jake Ginnivan

The goal of MahApps.Metro is to allow devs to quickly and easily cobble together a 'Modern' UI for their WPF apps (.Net 4.6.2 and later), with minimal effort.

ManagedEsent by: martinc

ManagedEsent provides managed access to ESENT, the embeddable database engine native to Windows. ManagedEsent uses the esent.dll that is part of Microsoft Windows so there are no extra unmanaged binaries to download and install.

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.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.

MaterialDesignThemes by: James Willock

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

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

Math.NET Numerics, signed and thus with a strong name. We strongly discourage using this package and recommend using MathNet.Numerics instead, which is unsigned and weakly named.

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

MemoryPack.Generator by: Cysharp

Code generator for MemoryPack.

MessagePack by: neuecc

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