NuGet.Resolver by: NuGet
  • 54 total downloads
  • Latest version: 4.2.0
NuGet's dependency resolver within the NuGet.Packaging package
NuGet.RuntimeModel by: NuGet.RuntimeModel
  • 174 total downloads
  • Latest version: 4.3.0-beta1-2418
NuGet v3 core library.
NuGet.Versioning by: NuGet
  • 51 total downloads
  • Latest version: 4.2.0
  • semver,semantic versioning
NuGet's implementation of Semantic Versioning.
Nullable by: Manuel Römer
  • 88 total downloads
  • Latest version: 1.3.1
  • source compiletime null nullable attributes allownull disallownull doesnotreturn doesnotreturnif maybenull maybenullwhen notnull notnullifnotnull notnullwhen membernotnull membernotnullwhen
A source code only package which allows you to use .NET's new nullable attributes in older target frameworks like .NET Standard 2.0 or the "old" .NET Framework. This package does not contain any compiled binaries, but instead adds the attribute classes as C# source code to your project. Because this code is compiled together with the rest of your code, the built binaries will not have a dependency on this package, meaning that you can perfectly use it for both libraries and applications. The C# code is only included if you are targeting a framework version which does not support the new nullable attributes. For example, if you create a library which multi-targets .NET Standard 2.0 and 2.1, the majority of the attributes are not included in the .NET Standard 2.1 version, because it already provides these by default. Please see https://github.com/manuelroemer/Nullable for additional information on how to use this package.
NUnit by: Charlie Poole, Rob Prouse, Terje Sandstrom and contributors
  • 629 total downloads
  • Latest version: 5.0.0-beta.1
  • nunit test testing tdd framework fluent assert theory plugin addin
NUnit is a unit-testing framework for all .NET languages. It can run on macOS, Linux and Windows operating systems. NUnit can be used for a wide range of testing, from unit testing with TDD to full-fledged system and integration testing. It is a non-opinionated, broad and deep framework with multiple different ways to assert that your code behaves as expected. Many aspects of NUnit can be extended to suit your specific purposes. The latest version, version 5, is an upgrade from the groundbreaking NUnit 3 framework and its major update version 4. It is a modernized version, aimed at taking advantage of the latest .NET features and C# language constructs. If you are upgrading from NUnit 3, be aware of the breaking changes (https://docs.nunit.org/articles/nunit/release-notes/breaking-changes.html#nunit-40). Please see the NUnit 4 Migration Guide (https://docs.nunit.org/articles/nunit/release-notes/Nunit4.0-MigrationGuide.html) and take care to prepare your NUnit 3 code before you do the upgrade. If you're upgrading from NUnit 4, please check the release notes for version 5 (https://docs.nunit.org/articles/nunit/release-notes/framework.html). Supported platforms: - .NET Framework 4.6.2+ - .NET 8.0+ - .NET 10.0+
Nustache by: Jason Diamond
  • 235 total downloads
  • Latest version: 1.16.0.10
  • Template Mustache
Logic-less templates for .NET
Owin by: OWIN startup components contributors
  • 15 total downloads
  • Latest version: 1.0.0
  • OWIN
OWIN IAppBuilder startup interface
PdfPig by: UglyToad
  • 99 total downloads
  • Latest version: 0.0.11
  • PDF Reader Document Adobe PDFBox PdfPig pdf-extract
Reads text content from PDF documents and supports document creation. Apache 2.0 licensed.
PDFsharp by: empira Software GmbH
  • 194 total downloads
  • Latest version: 1.51.5185-beta
  • PDFsharp PDF creation
PDFsharp is the Open Source .NET library that easily creates and processes PDF documents on the fly from any .NET language. The same drawing routines can be used to create PDF documents, draw on the screen, or send output to any printer. This is the PDFsharp PDF Core package. See Project Information for details.
PInvoke.BCrypt by: Andrew Arnott
  • 316 total downloads
  • Latest version: 0.6.49
P/Invoke methods for the Windows BCrypt.dll.
PInvoke.Kernel32 by: Andrew Arnott
  • 389 total downloads
  • Latest version: 0.6.49
P/Invoke methods for the Windows Kernel32.dll.
PInvoke.NCrypt by: Andrew Arnott
  • 324 total downloads
  • Latest version: 0.6.49
P/Invoke methods for the Windows NCrypt.dll.
PInvoke.Windows.Core by: Andrew Arnott
  • 190 total downloads
  • Latest version: 0.6.49
P/Invoke types for common Windows APIs.
Polly by: Michael Wolfenden, App vNext
  • 315 total downloads
  • Latest version: 4.5.0-beta-netstandar-0001
  • Exception Handling Policy Retry Wait Circuit Breaker
Polly is a .NET 3.5 / 4.0 / 4.5 / PCL (Profile 259) / NET Standard 1.0 library that allows developers to express transient exception and fault handling policies such as Retry, Retry Forever, Wait and Retry or Circuit Breaker in a fluent manner.
Polly-Signed by: Michael Wolfenden, App vNext
  • 280 total downloads
  • Latest version: 4.5.0-beta-netstandar-0001
  • Exception Handling Policy Retry Wait Circuit Breaker
Polly is a .NET 3.5 / 4.0 / 4.5 / PCL (Profile 259) / NET Standard 1.0 library that allows developers to express transient exception and fault handling policies such as Retry, Retry Forever, Wait and Retry or Circuit Breaker in a fluent manner.
PolySharp by: Sergio Pedri
  • 204 total downloads
  • Latest version: 1.16.0+99a4dcece8e10c8bedf0871ac4cdb8650f2b649a
  • dotnet net netcore netstandard csharp library generator polyfill roslyn
PolySharp provides generated, source-only polyfills for C# language features, to easily use all runtime-agnostic features downlevel
Portable.BouncyCastle by: Claire Novotny
  • 197 total downloads
  • Latest version: 1.9.0
  • bouncycastle cryptography encryption security
BouncyCastle portable version with support for .NET 4, .NET Standard 2.0
Portable.ConcurrentDictionary by: Stef Heyenrath
  • 11 total downloads
  • Latest version: 1.0.4
  • Dictionary ConcurrentDictionary Collections System.Collections.Concurrent
This is a .NET Standard 1.0, .NET 2.0, .NET 3.5, Silverlight 5.0 and Windows Phone Silverlight 8.0 & 8.1 backport from System.Collections.Concurrent.ConcurrentDictionary as defined in .NET Core
QRCoder by: Raffael Herrmann, Shane Krueger
  • 357 total downloads
  • Latest version: 1.8.0
  • c# csharp qr qrcoder qrcode qr-generator qr-code-generator
QRCoder is a simple library, written in C#.NET, which enables you to create QR codes.
QuestPDF by: MarcinZiabek
  • 820 total downloads
  • Latest version: 2026.7.2
  • pdf generation creation document report invoice export tagged accessibility csharp dotnet fluent layout merge edit html
QuestPDF is a modern PDF generation library for C# and .NET. Create invoices, reports, and data exports — a code-first alternative to HTML-to-PDF conversion. Merge and edit documents, generate PDF/A and accessible PDF/UA files, embed ZUGFeRD and Factur-X invoice XML. Source-available with a free Community license.