A mocking library for testing stripe ruby

HTTP mocking and expectations library

MockK - mocking framework for Kotlin http://mockk.io

The easy mocking library for .NET - http://fakeiteasy.github.io

Highly opinionated mocking framework for PHP 5.3+

EasyMock, making mocking easier since 2001

Ouzo Framework - PHP MVC ORM

WireMock.Net is a flexible library for stubbing and mocking web HTTP responses using requests matching criteria.

CppUTest unit testing and mocking framework for C/C++

This is a specs2 adapter + DSL for using the popular mocking framework JMock

The easy mocking library for .NET