Top 20 NuGet test Packages

Aurochses.Xunit is a library for creating xUnit tests.
Aurochses.Xunit.AspNetCore.Mvc is a library for creating xUnit tests for ASP.NET Core MVC.
CUITe (Coded UI Test enhanced) Framework is a thin layer developed on top of Microsoft Visual Studio Team Test's Coded UI Test engine which helps reduce code, increases readability and maintainability, while also providing a bunch of cool features for the automation engineer.
Feature flag utilities for .NET - based on etsy and reddit feature flag implementations.
Framework to help testing Restful APIs in a fluent style that are easy to write and understand. Allows you to write your Api Requests and Asserting the response in a fluent manner. Compatible with NUnit, MSTest, XUnit and any test runner.
Package to help using Newton JsonSchema package to validate response models from an Integration test using RestFluencing.
A complete, ligthweight and self-contained .NET Standard 2.0 offline exception logging library, powered by Realm
MSTest implementation of SparkyTestHelpers.Scenarios
Helpers for testing code that uses ConfigurationManager.AppSettings
Classes to randomly generate data for unit tests. Powered by AutoFixture.
Configurators to randomly generate Akka.NET classes
Extension for DbTest to use with Entity Framework Core
.NET Unit test helpers for asserting that ASP.NET MVC Core controller / Razor Page actions return expected results
*TestBase* gives you a flying start with - fluent assertions that are simple to extend - sharp error messages - tools to help you test with “heavyweight” dependencies on - AspNetCore.Mvc, AspNet.Mvc 3-5, or WebApi Contexts - HttpClient - Ado.Net - Streams & Logging - Mix & match with your ...
This package contains the Elasticsearch extension for the testing framework NBi (check at http://www.nbi.io)