Top 20 NuGet mock Packages

Automatically route your API calls to static JSON files, for hiccup free front–end development.
A library of extensions for the Moq framework (currently only .ReturnsInOrder) created from Phil Haack's blog post http://haacked.com/archive/2010/11/24/moq-sequences-revisited.aspx/
Helpers for testing .net applications
A really simple little autofaker for FakeItEasy.
A web api controller fluent mocking utility
Wraps common mocking patterns in descriptive methods. This makes it easy to write tests that read like functional specifications of the application.
A utility to automatically generate the wrapper class and return to you the wrapped object that implements your interface.
A fakes framework for restsharp
NMockaroo is a little library that provides an easy way for you to generate mock data based on your C# objects using the Mockaroo API.
Fluky is a random framework to generate random strings, numbers, names, etc. to help reduce some of the monotony particularly while writing automated tests or anywhere else you need anything random data. Mock data library.
Allows package authors to supply re-uable mocks for their library
Supports checking that Moq setups are executed in sequence.
The StaticDataLibrary T4 template generates a library of static data objects from CSV files and Excel spreadsheets. The primary intended use for this template is to generate lists of data at design-time for unit tests, although it can also be used to generate other static data that doesn't change du...
The library implements recorder and player of HTTP requests. When recording, a request to a remote service and its live response are serialized to JSON and saved to a file (cassette), so that next time the same request is made through the player it can be served with the previously recorded response...
In-memory mock for EntityFramework 6 DbContext
Contains Extensions to verify the order of invocation on mocks.
Simple, type-safe, mockable, and json-based extension of the native HttpClient class
Container that creates mocks for all the dependencies of a class.
An unofficial .NET API wrapper for RandomUser.me