PdfLibCore by: Jan Baarssen

PdfLib CORE is a fast PDF editing and reading library for modern .NET core applications.

PInvoke.BCrypt by: Andrew Arnott

P/Invoke methods for the Windows BCrypt.dll.

PInvoke.Kernel32 by: Andrew Arnott

P/Invoke methods for the Windows Kernel32.dll.

PInvoke.NCrypt by: Andrew Arnott

P/Invoke methods for the Windows NCrypt.dll.

PInvoke.Windows.Core by: Andrew Arnott

P/Invoke types for common Windows APIs.

Pkcs11Interop by: Jaroslav Imrich

Managed .NET wrapper for unmanaged PKCS#11 libraries

Polly-Signed by: Michael Wolfenden, App vNext

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

PolySharp provides generated, source-only polyfills for C# language features, to easily use all runtime-agnostic features downlevel

Portable.BouncyCastle by: Claire Novotny

BouncyCastle portable version with support for .NET 4, .NET Standard 2.0

Portable.ConcurrentDictionary by: Stef Heyenrath

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

Portable.DataAnnotations by: Ryan Horath

A portable library for the DataAnnotations namespace. Reduced surface area matches the Silverlight SDK version of DataAnnotations, with additions of some classes.

prometheus-net by: andrasm, qed-, lakario

.NET client for prometheus.io

protobuf-net by: Marc Gravell

Provides simple access to fast and efficient "Protocol Buffers" serialization from .NET applications

QRCoder by: Raffael Herrmann, Shane Krueger

QRCoder is a simple library, written in C#.NET, which enables you to create QR codes.

RazorEngine by: Matthew Abbott, Ben Dornis, Matthias Dittrich

RazorEngine - A Templating Engine based on the Razor parser.

ReflectionBridge by: Stef Heyenrath

Provides some extensions which define a bridge for the differences between Type and TypeInfo.

Remotion.Linq by: rubicon IT GmbH

re-linq Frontend: A foundation for parsing LINQ expression trees and generating queries in SQL or other languages. Key features: - Transforms expression trees into abstract syntax trees resemblying LINQ query expressions (from ... select syntax) - Simplifies many aspects of this tree (sub queries, transparent identifieres, pre-evaluation ...) - Provides basic infrastructure for backend development (e.g. SQL generation) - Provides a framework for user-defined query extensions and transformations

Remotion.Linq.EagerFetching by: rubicon IT GmbH

Allows LINQ providers based on re-linq Frontend to support eager fetching.

Riok.Mapperly by: Mapperly Contributors, Lars Tönz, Manuel Allenspach

A .NET source generator for generating object mappings. No runtime reflection.

Roslyn.Diagnostics.Analyzers by: Microsoft

Private analyzers specific to Roslyn repo. These analyzers are not intended for public consumptions outside of the Roslyn repo.