CommunityToolkit.WinUI.Notifications by: CommunityToolkit.Common, dotnetfoundation

The official way to send toast notifications on Windows 10 via code rather than XML, with the help of IntelliSense. Supports all C# app types, including WPF, UWP, WinForms, and Console, even without packaging your app as MSIX. Also supports C++ UWP apps. Additionally, generate notification payloads from your ASP.NET web server to send as push notifications, or generate notification payloads from class libraries. For UWP/MSIX apps, you can also generate tile and badge notifications.

Confluent.Kafka by: Confluent Inc., Andreas Heider

Confluent's .NET Client for Apache Kafka

Confluent.Kafka.DependencyInjection by: Kyle McClellan and others

An extension of Confluent.Kafka for use with Microsoft.Extensions.DependencyInjection (and friends).

ConsoleAppFramework by: Cysharp

Zero Dependency, Zero Overhead, Zero Reflection, Zero Allocation, AOT Safe CLI Framework powered by C# Source Generator.

coverlet.collector by: tonerdo

Coverlet is a cross platform code coverage library for .NET, with support for line, branch and method coverage.

CSharp by: CSharp Development Team

CSharp

CsQuery by: James Treworgy

CsQuery is an HTML parser, CSS selector engine and jQuery port for .NET 4 and C#. It implements all CSS2 and CSS3 selectors, all the DOM manipulation methods of jQuery, and some of the utility methods.

CsvHelper by: Josh Close

A library for reading and writing CSV files. Extremely fast, flexible, and easy to use. Supports reading and writing of custom class objects.

Cucumber.Messages by: Cucumber Ltd, TechTalk

JSON schema-based messages for Cucumber's inter-process communication

Dapper by: Sam Saffron, Marc Gravell

A high performance Micro-ORM supporting Sql Server, MySQL, Sqlite, SqlCE, Firebird etc..

Dapper.ColumnMapper by: Dan Turkenkopf

Simple extension to [Dapper](https://code.google.com/p/dapper-dot-net/) to allow arbitrary column to property mapping

Dapper.SqlBuilder by: Sam Saffron, Johan Danforth

The Dapper SqlBuilder component, for building SQL queries dynamically.

Docker.DotNet by: Docker.DotNet

Docker.DotNet is a library that allows you to interact with the Docker Remote API programmatically with fully asynchronous, non-blocking and object-oriented code in your .NET applications.

Docker.DotNet.Enhanced by: Docker.DotNet

Docker.DotNet is a library that allows you to interact with the Docker Remote API programmatically with fully asynchronous, non-blocking and object-oriented code in your .NET applications.

Docker.DotNet.Enhanced.X509 by: Docker.DotNet.X509

Docker.DotNet.X509 is a library that allows you to use certificate authentication with a remote Docker engine programmatically in your .NET applications.

Docker.DotNet.X509 by: Docker.DotNet.X509

Docker.DotNet.X509 is a library that allows you to use certificate authentication with a remote Docker engine programmatically in your .NET applications.

DocumentFormat.OpenXml by: Microsoft

The Open XML SDK provides tools for working with Office Word, Excel, and PowerPoint documents. It supports scenarios such as: - High-performance generation of word-processing documents, spreadsheets, and presentations. - Populating content in Word files from an XML data source. - Splitting up (shredding) a Word or PowerPoint file into multiple files, and combining multiple Word/PowerPoint files into a single file. - Extraction of data from Excel documents. - Searching and replacing content in Word/PowerPoint using regular expressions. - Updating cached data and embedded spreadsheets for charts in Word/PowerPoint. - Document modification, such as removing tracked revisions or removing unacceptable content from documents.

DocumentFormat.OpenXml.Framework by: Microsoft

The Open XML SDK provides tools for working with Office Word, Excel, and PowerPoint documents. It supports scenarios such as: - High-performance generation of word-processing documents, spreadsheets, and presentations. - Populating content in Word files from an XML data source. - Splitting up (shredding) a Word or PowerPoint file into multiple files, and combining multiple Word/PowerPoint files into a single file. - Extraction of data from Excel documents. - Searching and replacing content in Word/PowerPoint using regular expressions. - Updating cached data and embedded spreadsheets for charts in Word/PowerPoint. - Document modification, such as removing tracked revisions or removing unacceptable content from documents.

DotLiquid by: Tim Jones, Alessandro Petrelli

DotLiquid is a templating system ported to the .NET framework from Ruby’s Liquid Markup.

DotNet.Testcontainers by: Andre Hofmeister and contributors

A lightweight library to run tests with throwaway instances of Docker containers.