SpanJson by: SpanJson Contributors

SpanJson is a JSON serializer for .NET Core 2.1+

SpreadsheetLight by: Vincent Tan

SpreadsheetLight is an open source Open XML spreadsheet .NET library written in C#, and is released under the MIT License. You can create new Open XML spreadsheets, or work with existing Open XML spreadsheets that are compatible with Microsoft Excel 2007/2010/2013 and LibreOffice Calc. No Office/Excel Interop needed. You do not need Microsoft Office/Excel to be installed.

SpecFlow.NUnit by: SpecFlow Team

Package to use SpecFlow with NUnit 3.13 and later

SpecFlow.Tools.MsBuild.Generation by: SpecFlow Team

Package to enable the code-behind file generation during build time http://specflow.org/documentation/Generate-Tests-from-MsBuild/

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.

Spectre.Console.Cli by: Patrik Svensson Phil Scott Nils Andresen Cédric Luthi Frank Ray

A library that makes it easier to create beautiful console applications.

Spectre.Console by: Patrik Svensson Phil Scott Nils Andresen Cédric Luthi Frank Ray

A library that makes it easier to create beautiful console applications.

Skoruba.AuditLogging by: Jan Škoruba

Simple audit logging for .NET Core with EntityFramework Core support

Skoruba.IdentityServer4.Admin.BusinessLogic.Shared by: Jan Škoruba

Shared Business Logic layer for the administration of the IdentityServer4 and Asp.Net Core Identity

SkiaSharp.Views.Desktop.Common by: Microsoft

SkiaSharp Views & Layers are a set of platform-specific views and containers that can be used to draw on the screen.

Spire.PDF by: Administrator

Spire.PDF for .NET is a versatile PDF library that enables software developers to generate, edit, read and manipulate PDF files within their own .NET applications. As a standalone PDF component, Spire.PDF for .NET provides users an incredible wealth of features without installing Adobe Acrobat. This component is completely written in C#, but also supports VB.NET, Windows Forms and ASP.NET. With the Spire.PDF for .NET API, you can get the ability to read PDF text and image even attachments with high efficiency. Even the special content such as language written from right to left can be extracted such as Herbrew and Arabic. Other basic features such as text, image, table, shapes, hyperlinks, bookmark, headings, footnotes, lists, form fields, pagination, booklet barcode, attachments, transparency, annotations, actions, overlay etc all work great for users. As for security, Spire.PDF for .NET enables you to protect your PDF files by passwords and digital signature. Spire.PDF now supprots to work on .NET core, MonoAndroid and Xamarin.iOS platforms.

SmartBreadcrumbs by: zHaytam

A utility library for ASP.NET Core (both MVC and Razor Pages) websites to easily add and customize breadcrumbs.

Snappier by: btburnett3

A near-C++ performance implementation of the Snappy compression algorithm for .NET. Snappier is ported to C# directly from the official C++ implementation, with the addition of support for the framed stream format. By avoiding P/Invoke, Snappier is fully cross-platform and works on both Linux and Windows and against any CPU supported by .NET. However, Snappier performs best in .NET 6 and later on little-endian x86/64 processors with the help of System.Runtime.Instrinsics.

Slapper.AutoMapper by: Randy Burden & contributors

Slapper.AutoMapper is a mapping library that can convert dynamic data into static types and populate complex nested child objects.

Skoruba.IdentityServer4.Admin.BusinessLogic.Identity by: Jan Škoruba

Business Logic layer for the administration of the Asp.Net Core Identity and IdentityServer4

Skoruba.AuditLogging.EntityFramework by: Jan Škoruba

Simple audit logging for .NET Core with EntityFramework Core support

Skoruba.IdentityServer4.Admin.EntityFramework.Identity by: Jan Škoruba

Entity Framework layer for the administration of the Asp.Net Core Identity and IdentityServer4

Skoruba.IdentityServer4.Admin.EntityFramework.Extensions by: Jan Škoruba

EntityFramework extensions for the administration of the IdentityServer4 and Asp.Net Core Identity

Skoruba.IdentityServer4.Admin.EntityFramework by: Jan Škoruba

Entity Framework layer for the administration of the IdentityServer4

SpecFlow.Internal.Json by: SpecFlow Team

A really simple C# JSON parser.