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.

Castle.Core by: Castle Project Contributors

Castle Project 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: .NET Foundation and Contributors

The library provides an abstraction over IoC containers and service locators. Using the library allows an application to indirectly access the capabilities without relying on hard references.

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.

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

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..

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.

DotLiquid by: Tim Jones, Alessandro Petrelli

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

EntityFramework by: Microsoft

Entity Framework 6 (EF6) is a tried and tested object-relational mapper for .NET with many years of feature development and stabilization.

EPPlus by: EPPlus Software AB

A spreadsheet library for .NET framework and .NET core

Fable by: Alfonso García-Caro Núñez

F# to JS compiler

FastEndpoints by: FastEndpoints

A light-weight REST Api framework for ASP.Net 6 and newer that implements REPR (Request-Endpoint-Response) Pattern.

FastExpressionCompiler.src by: Maksim Volkau

FastExpressionCompiler is 10-40x times faster than Expression.Compile()

FluentAssertions by: Dennis Doomen

A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit test. Runs on 4.0 and 4.5 (Desktop and Windows Store), CoreCLR, Silverlight 5 and Windows Phone 8, 8.1 and 8.1 for Silverlight. Supports the unit test frameworks NUnit, XUnit, XUnit2, MBUnit, Gallio, MSpec, and NSpec.