SqlKata by: Ahmad Moussawi

A powerful Dynamic Sql Query Builder supporting Sql Server, MySql, PostgreSql, Oracle and Firebird

squirrel.windows by: GitHub

An installation and update framework for Windows applications

SSH.NET by: Renci

SSH.NET is a Secure Shell (SSH) library for .NET, optimized for parallelism and with broad framework support.

SshNet.Security.Cryptography by: Renci

Cryptographic functions for .NET

StackExchange.Redis by: Stack Exchange, Inc., marc.gravell

High performance Redis client, incorporating both synchronous and asynchronous usage.

StackExchange.Redis.Extensions.Core by: Ugo Lattanzi

StackExchange.Redis.Extensions is a library that extends StackExchange.Redis allowing you a set of functionality needed by common applications. To store complex data It requires one of the following implementations: - StackExchange.Redis.Extensions.Newtonsoft - StackExchange.Redis.Extensions.Jil - StackExchange.Redis.Extensions.MsgPack - StackExchange.Redis.Extensions.Protobuf - StackExchange.Redis.Extensions.Utf8Json - StackExchange.Redis.Extensions.Binary

StackExchange.Redis.StrongName by: Stack Exchange, Inc., marc.gravell

High performance Redis client, incorporating both synchronous and asynchronous usage.

starkbank-ecdsa by: Stark Bank

Pure C# implementation of the Elliptic Curve Digital Signature Algorithm (ECDSA) by Stark Bank

Stateless by: Stateless Contributors

Create state machines and lightweight state machine-based workflows directly in .NET code

Stimulsoft.Svg by: Stimulsoft

SVG rendering library.

StreamJsonRpc by: Microsoft

A cross-platform .NET portable library that implements the JSON-RPC wire protocol and can use System.IO.Stream or WebSocket so you can use it with any transport.

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.

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.