MockServer is a simple and easy-to-use open source application that allows users to simulate a real server environment. It allows developers to quickly and easily create a virtual server environment to test and develop their applications. It is an effective tool for testing applications and services that use HTTP, HTTPS, JMS, and other communication protocols. MockServer enables users to set up custom responses for certain requests, as well as record and replay requests for debugging and testing purposes. It also provides tools for setting up virtual environments, such as virtual servers, virtual databases, and virtual networks. MockServer is a versatile and powerful tool for developers to test their applications before deploying them to production.
Discontinued The hosted version of RequestBin (http://requestb.in/) was discontinued in March 2018 due to ongoing abuse that made it very difficult to reliably maintain the site. The source is still available to set up your own self-hosted instance.