OpenToolkit.Windowing.Desktop by: Team OpenTK

An abstraction over OpenToolkit.GraphicsLibraryFramework to provide a ready-to-go easy-to-use windowing and input abstraction.

OpenToolkit.Windowing.GraphicsLibraryFramework by: Team OpenTK

GLFW bindings for c# from the cpp GLFW library.

Oracle.EntityFrameworkCore by: Oracle

Oracle Data Provider for .NET (ODP.NET) Entity Framework Core for Oracle Database.

Oracle.ManagedDataAccess by: Oracle

Managed Oracle Data Provider for .NET (ODP.NET) features optimized ADO.NET data access to the Oracle database for .NET Framework and is 100% managed code. ODP.NET allows developers to take advantage of advanced Oracle database functionality, including Real Application Clusters, self-tuning statement cache, Application Continuity, JSON Relational Duality, and Fast Connection Failover.

Oracle.ManagedDataAccess.Core by: Oracle

Oracle Data Provider for .NET (ODP.NET) Core is a multi-platform ADO.NET driver that provides fast data access from Microsoft .NET (Core) clients to Oracle databases. ODP.NET Core consists of a single 100% managed code dynamic-link library.

Oscar.Data.SqlClient by: microestc@outlook.com

神通数据库驱动提供程序基于 .NET Framework 2.0 、.NET Framework 3.5 和 .NET Standard2.0(TFM) .NET API 规范编写, 支持.NET Framework >=2.0 以及 .NET Core 2.0 至 .NET 6, .NET 7, .NET 8, .NET 9

Owin by: OWIN startup components contributors

OWIN IAppBuilder startup interface

OxyPlot.Core by: OxyPlot

OxyPlot is a plotting library for .NET. This is the core library including the foundation classes and plot model. To display the plots, you also need to add a platform-specific OxyPlot package that contains a PlotView component.

OxyPlot.ImageSharp by: OxyPlot.ImageSharp

OxyPlot is a plotting library for .NET. This is package is based on SixLabors.ImageSharp.

OxyPlot.WindowsForms by: OxyPlot.WindowsForms

OxyPlot is a plotting library for .NET. This package targets Windows Forms applications.

Parlot by: Sebastien Ros

Parlot is a fast, lightweight and simple to use .NET parser combinator.

Pathoschild.Http.FluentClient by: Pathoschild

A modern async HTTP client for REST APIs. Its fluent interface lets you send an HTTP request and parse the response in one go.

PCLCrypto by: Andrew Arnott

PCL Crypto provides a consistent, portable set of crypto APIs for .NET 4.5, 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.

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.

PCLStorage by: Daniel Plaisted

PCL Storage provides a consistent, portable set of local file IO APIs for .NET, Windows Phone, Windows Store, Xamarin.iOS, Xamarin.Android, and Silverlight. This makes it easier to create cross-platform .NET libraries and apps.

Perfolizer by: Andrey Akinshin

Performance analysis toolkit

PetaPoco.Compiled by: PetaPoco

A Tiny ORMish thing for your POCO's.

PetaPoco.Extensions by: Argo Zhang(argo@163.com)

Longbow Component for .net core

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.