Stripe.net by: Stripe, Jayme Davis

Stripe.net is a sync/async .NET 4.5+ client, and a portable class library for the Stripe API. (Official Library)

StrongNamer by: Daniel Plaisted

Strong Namer will automatically add strong names to referenced assemblies which do not already have a strong name.

Stub.System.Data.SQLite.Core.NetFramework by: SQLite Development Team

The official SQLite database engine for both x86 and x64 along with the ADO.NET provider.

StyleCop.Analyzers by: Sam Harwell et. al.

An implementation of StyleCop's rules using Roslyn analyzers and code fixes

StyleCop.Analyzers.Unstable by: Sam Harwell et. al.

An implementation of StyleCop's rules using Roslyn analyzers and code fixes

StyleCop.MSBuild by: StyleCop contributors, Chris Dahlberg

Integrates StyleCop "Classic" source code analysis into the build process of C# projects to enforce a set of style and consistency rules.

Stylet by: Antony Male

A very lightweight but powerful ViewModel-First MVVM framework for WPF, inspired by Caliburn.Micro.

Superpower by: Datalust, Superpower Contributors, Sprache Contributors

A parser combinator library for C#

SuperSocket by: Kerry Jiang

SuperSocket is a light weight, cross platform and extensible socket server application framework. You can use it to build a server side socket application (like game server, GPS server, industrial control system, data acquisition server etc) easily without thinking about how to use socket, how to maintain the socket connections and how socket works.

SuperSocket.ClientEngine.Core by: Kerry Jiang

It's a .NET socket tool which can simplify the socket client developing. This difference between this package and SuperSocket.ClientEngine is it doesn't include the protocol resolving library.

SuperSocket.ProtoBase by: Kerry Jiang

It is a network protocol resolving library which can be used in both server and client

SuperSocket.WebSocket by: Kerry Jiang

WebSocket server implementation base on SuperSocket. It is just the same codebase with SuperWebSocket but has different assembly name and namespace.

Svg by: davescriven, jvenema, mrbean-bremen, H1Gdev, Wiesław Šoltés, owaits, ddpruitt, Ralf1108, Tebjan Halm, and others

Public fork of the C# SVG rendering library on codeplex: https://svg.codeplex.com/ This started out as a minor modification to enable the writing of proper SVG strings. But now after almost two years we have so many fixes and improvements that we decided to share our current codebase to the public in order to improve it even further. So please feel free to fork it and open pull requests for any fix, improvement or feature you add. License: Microsoft Public License: https://svg.codeplex.com/license

Swashbuckle.AspNetCore by: domaindrivendev

Swagger tools for documenting APIs built on ASP.NET Core

Swashbuckle.AspNetCore.Annotations by: Swashbuckle.AspNetCore.Annotations

Provides custom attributes that can be applied to controllers, actions and models to enrich the generated Swagger

Swashbuckle.AspNetCore.Swagger by: Swashbuckle.AspNetCore.Swagger

Middleware to expose Swagger JSON endpoints from API's built on ASP.NET Core

Swashbuckle.AspNetCore.SwaggerGen by: Swashbuckle.AspNetCore.SwaggerGen

Swagger Generator for API's built on ASP.NET Core

Swashbuckle.AspNetCore.SwaggerUI by: Swashbuckle.AspNetCore.SwaggerUI

Middleware to expose an embedded version of the swagger-ui 3 from an ASP.NET Core application

SwissEphNet by: Yan Grenier

Swiss Ephemeris .Net portage

System.AppContext by: Microsoft

Provides the System.AppContext class, which allows access to the BaseDirectory property and other application specific data. Commonly Used Types: System.AppContext