Mnemosyne by: Jon Hanna

Offers efficient copying, setting and zeroing operations.

modernhttpclient by: Paul Betts

Write your app using System.Net.Http, but drop this library in and it will go drastically faster.

MongoDB.Driver.Core by: MongoDB Inc.

Core Component of the Official MongoDB .NET Driver.

MongoDB.Libmongocrypt by: MongoDB Inc.

Libmongocrypt wrapper for the .NET driver.

Mono.Cecil by: Jb Evain

Cecil is a library written by Jb Evain to generate and inspect programs and libraries in the ECMA CIL format. It has full support for generics, and support some debugging symbol format. In simple English, with Cecil, you can load existing managed assemblies, browse all the contained types, modify them on the fly and save back to the disk the modified assembly.

Mono.Options by: Microsoft

A Getopt::Long-inspired option parsing library for C#.

Mono.TextTemplating by: Mikayla Hutchinson

Open-source implementation of the T4 templating engine.

Mono.Unix by: Microsoft

Provides functionality for managed code to access Posix/Unix features not accessible via BCL

MonoMod.Backports.Shims by: 0x0ade, DaNike

Shims for MonoMod.Backports to redirect certain OOB packages

Moq by: Daniel Cazzulino, kzu

Moq is the most popular and friendly mocking framework for .NET

morelinq by: MoreLINQ Developers.

This project enhances LINQ to Objects with the following methods: Acquire, Aggregate (some EXPERIMENTAL), AggregateRight, Append, Assert, AssertCount, AtLeast, AtMost, Await (EXPERIMENTAL), AwaitCompletion (EXPERIMENTAL), Backsert, Batch, Cartesian, Choose, CountBetween, CompareCount, CountBy, CountDown, Consume, DistinctBy, EndsWith, EquiZip, Evaluate, Exactly, ExceptBy, Exclude, FallbackIfEmpty, FillBackward, FillForward, Flatten, Fold, ForEach, From, FullGroupJoin, FullJoin, Generate, GenerateByIndex, GroupAdjacent, Index, IndexBy, Insert, Interleave, Lag, Lead, LeftJoin, MaxBy, Memoize (EXPERIMENTAL), Merge (EXPERIMENTAL), MinBy, Move, OrderBy, OrderedMerge, Pad, PadStart, Pairwise, PartialSort, PartialSortBy, Partition, Permutations, Pipe, Prepend, PreScan, Random, RandomDouble, RandomSubset, Rank, RankBy, Repeat, Return, RightJoin, RunLengthEncode, Scan, ScanBy, ScanRight, Segment, Sequence, Shuffle, SkipLast, SkipUntil, Slice, SortedMerge, Split, StartsWith, Subsets, TagFirstLast, TakeEvery, TakeLast, TakeUntil, ThenBy, ToArrayByIndex, ToDataTable, ToDelimitedString, ToDictionary, ToHashSet, ToLookup, Trace, Transpose, TraverseBreadthFirst, TraverseDepthFirst, TrySingle (EXPERIMENTAL), Unfold, Window, WindowLeft, WindowRight, ZipLongest, ZipShortest

MSBuild.Sdk.Extras by: Oren Novotny

Additional MSBuild targets and properties for SDK-style .NET projects.

MsgPack.Cli by: FUJIWARA, Yusuke

MessagePack is fast, compact, and interoperable binary serialization format. This package provides MessagePack serialization/deserialization APIs. This pacakge also supports Mono, Xamarin, .NET Core and Unity.

MSTest.Analyzers by: Microsoft

MSTest is Microsoft supported Test Framework. This package includes code analyzers and code fixes for MSTest.

MSTest.TestAdapter by: Microsoft

MSTest is Microsoft supported Test Framework. This package includes the adapter logic to discover and run tests. For access to the testing framework, install the MSTest.TestFramework package. Supported platforms: - .NET 4.6.2+ - .NET Core 3.1+ - .NET 6.0+ - .NET 6.0 Windows.18362+ - UWP 10.0.16299 - UWP 10.0.17763 with .NET 9

MSTest.TestFramework by: Microsoft

This is MSTest V2, the evolution of Microsoft's Test Framework. Supported platforms: - .NET 4.6.2+ - .NET Core 3.1+ (Universal Windows Apps 10+) - .NET 5.0 - .NET 5.0 Windows.18362+ - ASP.NET Core 1.0+ To discover and execute tests install MSTest.TestAdapter.

MudBlazor by: Garderoben, Henon and Contributors

Blazor Component Library based on Material Design principles with an emphasis on ease of use and extensibility

MvvmLight by: Laurent Bugnion (GalaSoft)

The MVVM Light Toolkit is a set of components helping people to get started in the Model-View-ViewModel pattern in Silverlight, WPF, Windows Phone, Windows 10 UWP, Xamarin.Android, Xamarin.iOS, Xamarin.Forms. It is a light and pragmatic framework that allows you to pick which components you want to use. This version will add the MVVM Light libraries as well as some scaffolding to your application to convert it in an MVVM app!

MySql.Data by: Oracle

MySql.Data.MySqlClient .Net Core Class Library

MySqlConnector by: Bradley Grainger, Caleb Lloyd

A truly async MySQL ADO.NET provider, supporting MySQL Server, MariaDB, Percona Server, Amazon Aurora, Azure Database for MySQL and more.