AutoMapper by: Jimmy Bogard

A convention-based object-object mapper.

AutoFixture.Xunit by: Mark Seemann

By leveraging the data theory feature of xUnit.net, this extension turns AutoFixture into a declarative framework for writing unit tests. In many ways it becomes a unit testing DSL (Domain Specific Language). For xUnit.net 2, please use the AutoFixture.Xunit2 NuGet Package.

AutoFixture by: Mark Seemann

AutoFixture makes it easier for developers to do Test-Driven Development by automating non-relevant Test Fixture Setup, allowing the Test Developer to focus on the essentials of each test case.

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.

AutoMapper.Extensions.Microsoft.DependencyInjection by: Jimmy Bogard

AutoMapper extensions for ASP.NET Core

AWSSDK.Core by: Amazon Web Services

The Amazon Web Services SDK for .NET - Core Runtime

AWSSDK.SecurityToken by: Amazon Web Services

The AWS Security Token Service (AWS STS) enables you to provide trusted users with temporary credentials that provide controlled access to your AWS resources.

AsyncFixer by: Semih Okur

AsyncFixer detects common async/await anti-patterns and, when possible, offers automatic fixes. It currently reports 6 categories of async/await misuse and provides code fixes for 3 of them. It has been validated against thousands of open-source C# projects and is designed to handle tricky real-world edge cases. Tool-friendly diagnostics support AI-assisted workflows even when a built-in code fix is not available.

AsyncUsageAnalyzers by: Sam Harwell et. al.

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

Autofac.Extensions.DependencyInjection by: Autofac Contributors

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

AWSSDK.S3 by: Amazon Web Services

Amazon Simple Storage Service (Amazon S3), provides developers and IT teams with secure, durable, highly-scalable object storage.

AutoMapper.Collection by: Tyler Carlson

Collection Add/Remove/Update support for AutoMapper. AutoMapper.Collection adds EqualityComparison Expressions for TypeMaps to determine if Source and Destination type are equivalent to each other when mapping collections.

AsyncBridge.Portable by: Daniel Grunwald Omer Mor Alex Davies

Adds the new C#5 async features for .NET 4.0 and Silverlight 5 projects (portable library)

AttributeRouting by: Tim McCall

AttributeRouting for ASP.NET MVC lets you specify routes using attributes on your MVC controllers and actions.

AttributeRouting.WebApi by: Tim McCall

AttributeRouting for ASP.NET Web API lets you specify routes using attributes on your API controllers and actions.

AttributeRouting.WebApi.Hosted by: Tim McCall

AttributeRouting for self-hosted Web API lets you specify routes using attributes on your API controllers and actions.

AspNet.Security.OAuth.Validation by: Kévin Chalet

OAuth2 validation middleware for ASP.NET Core.

AspNet.Security.OpenIdConnect.Primitives by: Kévin Chalet

OpenID Connect primitives for the OpenID Connect server middleware.

bblanchon.PDFium.Linux by: Benoît Blanchon

This package contains pre-compiled binaries of the PDFium library, an open-source library for PDF manipulation and rendering.

BCrypt.Net-Next by: Chris McKee Ryan D. Emerl Damien Miller

A fixed, enhanced and namespace compatible version of BCrypt.Net port of jBCrypt implemented in C#. It uses a variant of the Blowfish encryption algorithm’s keying schedule, and introduces a work factor, which allows you to determine how expensive the hash function will be, allowing the algorithm to be "future-proof".