AngleSharp by: AngleSharp

AngleSharp is the ultimate angle brackets parser library. It parses HTML5, CSS3, and XML to construct a DOM based on the official W3C specification.

Antlr by: Sam Harwell Terence Parr

ANother Tool for Language Recognition, is a language tool that provides a framework for constructing recognizers, interpreters, compilers, and translators from grammatical descriptions containing actions in a variety of target languages.

Antlr3.Runtime by: Sam Harwell Terence Parr

The runtime library for parsers generated by the C# target of ANTLR 3. This package supports projects targeting .NET 2.0 or newer, and built using Visual Studio 2008 or newer.

Ardalis.ApiEndpoints.CodeAnalyzers by: Steve Smith (@ardalis) Philip Pittle (@ppittle)

Code Analyzers supporting using Api Endpoints

Ardalis.GuardClauses by: Steve Smith (@ardalis)

A simple package by @ardalis and @nimblepros with guard clause helper methods. See docs for how to extend using your own extension methods defined in your project.

Ardalis.Specification by: Steve Smith (@ardalis) Scott DePouw

A simple package with a base Specification class, for use in creating queries that work with Repository types.

AspNet.Security.OAuth.Validation by: Kévin Chalet

OAuth2 validation middleware for ASP.NET Core.

AspNet.Security.OpenIdConnect.Extensions by: Kévin Chalet

OpenID Connect extensions for the OpenID Connect server middleware.

AspNet.Security.OpenIdConnect.Primitives by: Kévin Chalet

OpenID Connect primitives for the OpenID Connect server middleware.

AspNet.Security.OpenIdConnect.Server by: Kévin Chalet

OpenID Connect server middleware for ASP.NET Core.

Aspose.Words by: Aspose

Aspose.Words for .NET is a powerful, high-performance document processing library for creating, editing, converting, and rendering Word and PDF files in C#. It supports DOCX, DOC, RTF, ODT, HTML, PDF, Markdown, and over 30 formats. Designed for .NET developers, it enables advanced document automation, mail merge, text extraction, and report generation. Aspose.Words ensures high fidelity in document conversion, seamless API integration, and cross-platform compatibility. Ideal for cloud, web, and desktop applications.

AsyncUsageAnalyzers by: Sam Harwell et. al.

A collection of analyzers related to best practices for writing asynchronous code.

Autofac by: Autofac Contributors

Autofac is an IoC container for Microsoft .NET. It manages the dependencies between classes so that applications stay easy to change as they grow in size and complexity.

Autofac.Extensions.DependencyInjection by: Autofac Contributors

Autofac implementation of the interfaces in Microsoft.Extensions.DependencyInjection.Abstractions, the .NET Framework dependency injection abstraction.

Autofac.Extras.Quartz by: shatl

Autofac integration for Quartz.Net

Autofac.Multitenant by: Autofac Contributors

Autofac extension for multitenant application support.

AutoMapper by: Jimmy Bogard

A convention-based object-object mapper.

AutoMapper.Extensions.Microsoft.DependencyInjection by: Jimmy Bogard

AutoMapper extensions for ASP.NET Core

Automatonymous by: Chris Patterson

Automatonymous, an open source state machine library, usable with MassTransit.

Automatonymous.Visualizer by: Chris Patterson

Automatonymous, an open source state machine library, usable with MassTransit.