Mock API calls seamlessly

Run mock server based off an API contract with one command

A flexible, lightweight JSON Data validator and formatter

mock object testing framework that can be used to create stubs in iOS apps.

A better API testing tool

Automatically mock your HTTP interactions to simplify and speed up testing

ReqBin is an online API testing tool for REST and SOAP APIs.

HTTP Request & Response Service, written in Python + Flask.

The most popular and friendly mocking framework for .NET

Code Generator for HTTP Requests

Learn everything there is to know about REST apis with the this opensource resource.

Security and reliability for JavaScript applications