Top 20 NuGet Unit Testing Packages

Cornerstone Testing Automation Framework. Provides everything a Cornerstone App developer needs to start creating test automation with Specflow.
see: https://github.com/mrpinkzh/exas
What it is
Powerful dependency injector for TypeScript
Testing SymbolServer and debugging
Core database library used for assisting with integrations tests that connect to databases.
Core database library used for assisting with integrations tests that connect to databases.
In-memory testing the full SignalR pipline
Automagic Model Factory
SeleniumShim uses implicit retry until timeout loops within calls to FindElement and user actions on IWebElement objects which solves race conditions and problems with 'stale' references to WebElement.
Database utilities
Package Description
Test
Simplify testing for claiburn micro applications.
Akka support for BDD style testing
testing nuget package
Toolkit for testing configuration file access and custom configuration sections.
Some testing useful extension methods for .NET 4.0 or above
Package Description
Minimalist and cross platform. Contest, the new testing framework for .NET.