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

protobuf-net by: Marc Gravell

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

QRCoder by: Raffael Herrmann

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

QRCoder.Core by: Afonso Dutra Nogueira Filho

QRCoder.Core, written in C#.NET, which enables you to create QR codes Use System.Drawing.Common below 7.0.0.

Quartz by: Marko Lahma

Quartz.NET Scheduling Framework for .NET Platform

QuestPDF by: MarcinZiabek

Generate and edit PDF documents in your .NET applications using the open-source QuestPDF library and its C# Fluent API. Build invoices, reports and data exports with ease.

RavenDB.Client by: Hibernating Rhinos

RavenDB Client is the client library for accessing RavenDB

RBush by: viceroypenguin

Spatial Index data structure; used to make it easier to find data points on a two dimensional plane.

Refractored.MvvmHelpers by: James Montemagno

Collection of MVVM Helpers such as ObservableRangeCollection, BaseViewModel, Grouping, and others.

Reloadify3000 by: James Clancey

Hot Reload plugin for Comet

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

Respawn by: Jimmy Bogard

Intelligent checkpoints for database tests

Respond by: Scott Jehl Paul Irish Nicholas Zakas

The goal of this script is to provide a fast and lightweight (3kb minified / 1kb gzipped) script to enable responsive web designs in browsers that don't support CSS3 Media Queries - in particular, Internet Explorer 8 and under. It's written in such a way that it will probably patch support for other non-supporting browsers as well (more information on that soon).

RhinoMocks by: meisinger ayende

Dynamic mocking framework for .NET

Roslyn.Diagnostics.Analyzers by: Microsoft

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

RouteJs.Mvc5 by: Daniel Lo Nigro

JavaScript URL routing for ASP.NET MVC. Allows you to use your ASP.NET MVC routes from JavaScript. Please refer to project site (http://dan.cx/projects/routejs) for more details, usage examples and sample code.

runtime.android-arm.runtime.native.System.IO.Ports by: Microsoft

Internal implementation package not meant for direct consumption. Please do not reference directly.

runtime.android-arm64.runtime.native.System.IO.Ports by: Microsoft

Internal implementation package not meant for direct consumption. Please do not reference directly.

runtime.android-x64.runtime.native.System.IO.Ports by: Microsoft

Internal implementation package not meant for direct consumption. Please do not reference directly.

runtime.android-x86.runtime.native.System.IO.Ports by: Microsoft

Internal implementation package not meant for direct consumption. Please do not reference directly.