micro-jaymock

Visual Studio Community 2022

[FREE] - IDE for C#, Javascript, C++ and others. Latest release includes Xamarin

mockable.io

Mockable is a simple configurable service to mock out RESTful API or SOAP web services. This online service allows you to quickly define REST API or SOAP endpoints and have them return JSON or XML data

mockaroo

Mockaroo lets you generate realistic test data in CSV, JSON, SQL, and Excel formats. You can also create mocks for back-end API

Components.studio

Code components in isolation, visualize them in stories, test them, and publish them on npm