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

PDFsharp by: empira Software GmbH

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.

PCLCrypto by: Andrew Arnott

PCL Crypto provides a consistent, portable set of crypto APIs for .NET 4.5, Windows Phone 8.0 SL & 8.1 Xaml, Windows Store, Xamarin.iOS, Xamarin.Android. This makes it easier to create cross-platform .NET libraries and apps. Crypto functionality includes asymmetric and symmetric encryption and signatures, and key derivation. PCLCrypto calls into each native platform's crypto API for maximum performance. For RSA operations this produces a 2-100X improvement in performance on Android and iOS over using the standard RSACryptoServiceProvider API.

Refit by: Paul Betts, Refit contributors

The automatic type-safe REST library for Xamarin and .NET

PagedList.Mvc by: Troy Goode

Asp.Net MVC HtmlHelper method for generating paging control for use with PagedList library.

Quartz by: Marko Lahma

Quartz.NET Scheduling Framework for .NET Platform

Prism.Core by: Brian Lagunas, Dan Siegel

Prism is a fully open source version of the Prism guidance originally produced by Microsoft Patterns & Practices. Prism provides an implementation of a collection of design patterns that are helpful in writing well structured and maintainable XAML applications, including MVVM, dependency injection, commanding, event aggregation, and more. Prism's core functionality is a shared code base in a Portable Class Library targeting these platforms; WPF, Windows 10 UWP, and Xamarin Forms. Features that need to be platform specific are implemented in the respective libraries for the target platform.

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.BouncyCastle by: Oren Novotny

BouncyCastle portable version with support for .NET 4, .NET Standard 1.0-2.0, .NET Core

Plugin.FirebasePushNotification by: Rendy Del Rosario

Receive and handle firebase push notifications across Xamarin.iOS and Xamarin.Android

Plugin.CurrentActivity by: James Montemagno

Provides a simple solution for getting access to the current Activity of the application when developing a Plugin for Xamarin. This will lay down a base "application" class for developers in their Android application with boilerplate code to get them started.

PdfPig by: UglyToad

Reads text content from PDF documents and supports document creation. Apache 2.0 licensed.

QuestPDF by: MarcinZiabek

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.

React.Core by: Daniel Lo Nigro

ReactJS and Babel tools for .NET. Important: This package does not do much on its own; you probably want an integration package (like React.Web.Mvc4) as well. Please refer to project site (http://reactjs.net/) for more details, usage examples and sample code.

Plugin.Permissions by: James Montemagno

Check to see if your users have granted or denied permissions for common permission groups on iOS and Android. Additionally, you can request permissions with a simple cross-platform async/awaitified API.

Reloadify3000 by: James Clancey

Hot Reload plugin for Comet

protobuf-net by: Marc Gravell

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

Polly by: Michael Wolfenden, App vNext

Polly is a .NET 4.5 / .NET Standard 1.0 library that allows developers to express resilience and transient fault handling policies such as Retry, Circuit Breaker, Timeout, Bulkhead Isolation and Fallback in a fluent and thread-safe manner.

PDFsharp-MigraDoc by: empira Software GmbH

MigraDoc Foundation - the Open Source .NET library that easily creates documents based on an object model with paragraphs, tables, styles, etc. and renders them into PDF or RTF. This is the MigraDoc PDF Core package. See Project Information for details.

Radzen.Blazor by: Radzen Ltd.

Radzen Blazor is the most sophisticated free UI component library for Blazor, featuring 110+ native components including DataGrid, Scheduler, Charts, and advanced theming with full support for Material Design and Fluent UI.