BenchmarkDotNet by: Andrey Akinshin, Jon Skeet, Matt Warren

Powerful .NET library for benchmarking

BenchmarkDotNet.Annotations by: .NET Foundation and contributors

Powerful .NET library for benchmarking

BenchmarkDotNet.Toolchains.Roslyn by: .NET Foundation and contributors

Powerful .NET library for benchmarking

BlazorStrap by: Chanan Braunstein, John Bomhold

A bootstrap 5 component library for Blazor

BlazorStrap.V5 by: Chanan Braunstein, John Bomhold

Bootstrap 5.x component library for BlazorStrap

Bogus by: Brian Chavez

A simple and sane data generator for populating objects that supports different locales. A delightful port of the famed faker.js and inspired by FluentValidation. Use Bogus to create UIs with fake data or seed databases. Get started by using Faker class or a DataSet directly.

bootstrap by: The Bootstrap Authors, Twitter Inc.

The most popular front-end framework for developing responsive, mobile first projects on the web.

BouncyCastle by: Bouncy Castle Project Contributors

The Bouncy Castle Crypto package is a C# implementation of cryptographic algorithms and protocols, it was developed by the Legion of the Bouncy Castle, a registered Australian Charity, with a little help! The Legion, and the latest goings on with this package, can be found at [http://www.bouncycastle.org](http://www.bouncycastle.org). In addition to providing basic cryptography algorithms, the package also provides support for CMS, TSP, X.509 certificate generation and a variety of other standards such as OpenPGP.

Castle.Core by: Castle Project Contributors

Castle Core, including DynamicProxy, Logging Abstractions and DictionaryAdapter

CommandLineParser by: Giacomo Stelluti Scala

The Command Line Parser Library offers to CLR applications a clean and concise API for manipulating command line arguments and related tasks.

CommonServiceLocator by: Microsoft.Practices.ServiceLocation

A simple facade that provides insulation from specific IoC containers

Confluent.Kafka by: Confluent Inc., Andreas Heider

Confluent's .NET Client for Apache Kafka

ConsoleAppFramework by: Cysharp

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

coverlet.msbuild by: tonerdo

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

Crc32.NET by: force

Fast version of Crc32 algorithm for .NET. It is up to 3x-5x times better than other "fast" implemenations. Code based on Crc32C.NET library.

CSharp by: CSharp Development Team

CSharp

CsQuery by: James Treworgy

CsQuery is a 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. It includes an HTML parser, a document object model that mimics the browser DOM, and uses a subselect-capable index for fast operation.

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

Protocol Buffer messages for Cucumber's and SpecFlow's inter-process communication

Dapper by: Sam Saffron, Marc Gravell, Nick Craver

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