Microsoft.WindowsAppSDK.Runtime by: Microsoft

The Windows App SDK empowers all Windows Desktop apps with modern Windows UI, APIs, and platform features, including back-compat support. This is a package that can be referenced to declare the WindowsAppSDK framework packages should be referenced by default.

Microsoft.WindowsAppSDK.Widgets by: Microsoft

The Windows App SDK empowers all Windows Desktop apps with modern Windows UI, APIs, and platform features, including back-compat support. This package contains the Widgets APIs.

Microsoft.WindowsAppSDK.WinUI by: Microsoft

The Windows App SDK empowers all Windows Desktop apps with modern Windows UI, APIs, and platform features, including back-compat support. This package contains the modern Windows UI features.

Microsoft.WindowsAzure.ConfigurationManager by: Microsoft

Microsoft Azure Configuration Manager provides a unified API to load configuration settings regardless of where the application is hosted - whether on-premises or in a Cloud Service.

Microsoft.Xaml.Behaviors.Wpf by: Microsoft

Easily add interactivity to your apps using XAML Behaviors for WPF. Behaviors encapsulate reusable functionalities for elements that can be easily added to your XAML without the need for more imperative code.

MicrosoftExpressionInteractions by: kier.knowlton

Microsoft.Expression.Interactions.dll for WPF 4.0 & 4.5

MimeKit by: Jeffrey Stedfast

MimeKit is an Open Source library for creating and parsing MIME, S/MIME and PGP messages on desktop and mobile platforms. It also supports parsing of Unix mbox files. Unlike any other .NET MIME parser, MimeKit's parser does not need to parse string input nor does it use a TextReader. Instead, it parses raw byte streams, thus allowing it to better support undeclared 8bit text in headers as well as message bodies. It also means that MimeKit's parser is significantly faster than other .NET MIME parsers (more than 25x faster than OpenPOP.NET and over 100x faster than AE.Net.Mail and MailSystem.NET). MimeKit's parser also uses a real tokenizer when parsing the headers rather than regex or string.Split() like most other .NET MIME parsers. This means that MimeKit is much more RFC-compliant than any other .NET MIME parser out there, including the commercial implementations. In addition to having a far superior parser implementation, MimeKit's object tree is not a derivative of System.Net.Mail objects and thus does not suffer from System.Net.Mail's massive limitations or bugs. API documentation can be found on the web at http://www.mimekit.net/docs For those that need SMTP, POP3 or IMAP support, check out https://github.com/jstedfast/MailKit

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: mhutch

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

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, AggregateRight, Assert, AssertCount, AtLeast, AtMost, Batch, Cartesian, CountBetween, CountBy, Concat, Consume, DistinctBy, EndsWith, EquiZip, Exactly, ExceptBy, Exclude, FallbackIfEmpty, FillBackward, FillForward, Flatten, Fold, ForEach, From, FullGroupJoin, FullJoin, Generate, GenerateByIndex, GroupAdjacent, Incremental, Index, Insert, Interleave, Lag, Lead, LeftJoin, MaxBy, MinBy, Move, NestedLoops, OrderBy, OrderedMerge, Pad, PadStart, Pairwise, PartialSort, PartialSortBy, Partition, Permutations, Pipe, Prepend, PreScan, Random, RandomDouble, RandomSubset, Rank, RankBy, Repeat, RightJoin, RunLengthEncode, Scan, ScanRight, Segment, Sequence, SingleOrFallback, SkipLast, SkipUntil, Slice, SortedMerge, Split, StartsWith, Subsets, TagFirstLast, TakeEvery, TakeLast, TakeUntil, ThenBy, ToArrayByIndex, ToDataTable, ToDelimitedString, ToDictionary, ToHashSet, ToLookup, Trace, TraverseBreadthFirst, TraverseDepthFirst, Unfold, Windowed, 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.