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.

AutoMapper by: Jimmy Bogard

A convention-based object-object mapper. AutoMapper uses a fluent configuration API to define an object-object mapping strategy. AutoMapper uses a convention-based matching algorithm to match up source to destination values. Currently, AutoMapper is designed for model projection scenarios to flatten complex object models to DTOs and other simple objects, whose design is better suited for serialization, communication, messaging, or simply an anti-corruption layer between the domain and application layer.

Autofac by: Autofac Contributors

Base assemblies for the Autofac Inversion of Control Container

Aspire.Dashboard by: Microsoft

Dashboard browser interface for .NET Aspire.

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 helps developers in finding and correcting common async/await misuses (i.e., anti-patterns). It currently detects 5 common kinds of async/await misuses and fixes 3 of them via program transformations. AsyncFixer has been tested with thousands of open-source C# projects and successfully handles many corner cases.

AsyncUsageAnalyzers by: Sam Harwell et. al.

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

AttributeRouting.Core by: Tim McCall

Core functionality for all AttributeRouting packages.

AttributeRouting.Core.Http by: Tim McCall

Core functionality for AttributeRouting Web API packages.

AWSSDK.S3 by: Amazon Web Services

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

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.

AutoMapper.Collection by: Tyler Carlson

Collection updating support for AutoMapper

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)

Automatonymous by: Chris Patterson

Automatonymous is a state machine library for .NET

AttributeRouting.Core.Web by: Tim McCall

Core functionality for AttributeRouting ASP.NET MVC and Web API packages.

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.