SharpPcap by: Chris Morgan

SharpPcap is a cross-platform(Windows, Mac, Linux) packet capture framework for the .NET environment. It provides an API for capturing, injecting, analyzing and building packets using any .NET language such as C# and VB.NET.

SharpZipLib by: ICSharpCode

SharpZipLib (#ziplib, formerly NZipLib) is a compression library for Zip, GZip, BZip2, and Tar written entirely in C# for .NET. It is implemented as an assembly (installable in the GAC), and thus can easily be incorporated into other projects (in any .NET language)

Should by: Eric Hexter, Tim Scott

The Should Assertion Library provides a set of extension methods for test assertions for AAA and BDD style tests. It provides assertions only, and as a result it is test runner agnostic. The assertions are a direct fork of the xUnit test assertions. This project was born because test runners Should be independent of the assertions!

Shouldly by: Jake Ginnivan, Joseph Woodward, Simon Cropp

Shouldly - Assertion framework for .NET. The way asserting *Should* be

SixLabors.Core by: Six Labors

Low level primitives for use across Six Labors projects.

SixLabors.Fonts by: Six Labors and contributors

A cross-platform library for loading and laying out fonts for processing and measuring; written in C#

SixLabors.ImageSharp by: Six Labors and contributors

A new, fully featured, fully managed, cross-platform, 2D graphics API for .NET

SixLabors.ImageSharp.Drawing by: Six Labors and contributors

An extension to ImageSharp that allows the drawing of images, paths, and text.

SixLabors.Shapes by: Six Labors and contributors

Fully managed polygon manipulation/merging and interrogation library targeting netstandard.

SixLabors.Shapes.Text by: Six Labors and contributors

Allows generating glyphs for text and a fonts for manipulation using SixLabors.Shapes

SkiaSharp by: Microsoft

SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.

SkiaSharp.NativeAssets.macOS by: Microsoft

SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.

SkiaSharp.NativeAssets.Win32 by: Microsoft

SkiaSharp is a cross-platform 2D graphics API for .NET platforms based on Google's Skia Graphics Library. It provides a comprehensive 2D API that can be used across mobile, server and desktop models to render images.

smtpapi by: Brandon West

Easily build SendGrid SMTPAPI headers.

SocketIoClientDotNet by: Matthias Ludwig

This is the Socket.IO Client Library for .NET.

SourceLink.Create.CommandLine by: Cameron Taggart

SourceLink: Source Code On Demand Source Link your Portable PDB files to allow source code to be downloaded on demand

SpecFlow by: SpecFlow Team

SpecFlow aims at bridging the communication gap between domain experts and developers by binding business readable behavior specifications to the underlying implementation. Our mission is to provide a pragmatic and frictionless approach to Acceptance Test Driven Development and Behavior Driven Development for .NET projects today.

SpecFlow.CustomPlugin by: TechTalk

Package for writing custom extensions for SpecFlow.

SpecFlow.NUnit by: SpecFlow Team

Package to use SpecFlow with NUnit 3.13 and later

SpecFlow.Plus.LivingDocPlugin by: SpecFlow Team

A plugin for SpecFlow to generate a shareable HTML Gherkin feature execution report (living documentation). Use together with SpecFlow.Plus.LivingDoc.CLI.