Lucene.Net by: The Apache Software Foundation

Lucene.Net is a full-text search engine library capable of advanced text analysis, indexing, and searching. It can be used to easily add search capabilities to applications. Lucene.Net is a C# port of the popular Java Lucene search engine framework from The Apache Software Foundation, targeted at .NET Framework and .NET Core users.

MailKit by: Jeffrey Stedfast

MailKit is an Open Source cross-platform .NET mail-client library that is based on MimeKit and optimized for mobile devices. Features include: * SASL Authentication via SCRAM-SHA-256, SCRAM-SHA-1, NTLM, DIGEST-MD5, CRAM-MD5, LOGIN, PLAIN, and XOAUTH2. * A fully-cancellable SmtpClient with support for STARTTLS, 8BITMIME, BINARYMIME, ENHANCEDSTATUSCODES, SIZE, DSN, PIPELINING and SMTPUTF8. * A fully-cancellable Pop3Client with support for STLS, UIDL, APOP, PIPELINING, UTF8, and LANG. * A fully-cancellable ImapClient with support for ACL, QUOTA, LITERAL+, IDLE, NAMESPACE, ID, CHILDREN, LOGINDISABLED, STARTTLS, MULTIAPPEND, UNSELECT, UIDPLUS, CONDSTORE, ESEARCH, SASL-IR, COMPRESS, WITHIN, ENABLE, QRESYNC, SORT, THREAD, ESORT, METADATA, FILTERS, LIST-STATUS, SORT=DISPLAY, SPECIAL-USE, CREATE-SPECIAL-USE, MOVE, SEARCH=FUZZY, UTF8=ACCEPT, UTF8=ONLY, LITERAL-, APPENDLIMIT, XLIST, and X-GM-EXT1. * Client-side sorting and threading of messages (the Ordinal Subject and the Jamie Zawinski threading algorithms are supported). * Asynchronous versions of all methods that hit the network. * S/MIME, OpenPGP and DKIM signature support via MimeKit. * Microsoft TNEF support via MimeKit.

ManagedEsent by: Microsoft

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.

Markdig by: Alexandre Mutel

A fast, powerful, CommonMark compliant, extensible Markdown processor for .NET with 20+ builtin extensions (pipetables, footnotes, definition lists... etc.)

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).

MaxMind.Db by: MaxMind Inc.

.NET reader for the MaxMind DB file format

MaxMind.GeoIP2 by: MaxMind Inc.

MaxMind GeoIP2 Database Reader and Web Service Client

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.

Microsoft.AspNetCore.Antiforgery by: Microsoft

An antiforgery system for ASP.NET Core designed to generate and validate tokens to prevent Cross-Site Request Forgery attacks.

Microsoft.AspNetCore.Authentication by: Microsoft

ASP.NET Core common types used by the various authentication middleware components.

Microsoft.AspNetCore.Authentication.Abstractions by: Microsoft

ASP.NET Core common types used by the various authentication components.

Microsoft.AspNetCore.Authentication.Cookies by: Microsoft

ASP.NET Core middleware that enables an application to use cookie based authentication.

Microsoft.AspNetCore.Authentication.Core by: Microsoft

ASP.NET Core common types used by the various authentication middleware components.

Microsoft.AspNetCore.Authorization by: Microsoft

ASP.NET Core authorization classes. Commonly used types: Microsoft.AspNetCore.Authorization.AllowAnonymousAttribute Microsoft.AspNetCore.Authorization.AuthorizeAttribute

Microsoft.AspNetCore.Authorization.Policy by: Microsoft

ASP.NET Core authorization policy helper classes.

Microsoft.AspNetCore.Cors by: Microsoft

CORS middleware and policy for ASP.NET Core to enable cross-origin resource sharing. Commonly used types: Microsoft.AspNetCore.Cors.DisableCorsAttribute Microsoft.AspNetCore.Cors.EnableCorsAttribute

Microsoft.AspNetCore.Cryptography.Internal by: Microsoft

Infrastructure for ASP.NET Core cryptographic packages. Applications and libraries should not reference this package directly.

Microsoft.AspNetCore.Cryptography.KeyDerivation by: Microsoft

ASP.NET Core utilities for key derivation.

Microsoft.AspNetCore.DataProtection by: Microsoft

ASP.NET Core logic to protect and unprotect data, similar to DPAPI.