API Simulator for Easy and Realistic API Simulations
Discover
Scroll down and find out what problems API Simulator solves.Features
See API Simulator's many powerful features available today.Quick Start
Visit the online guide to get started quickly with API Simulator.Download
Download your completely free copy of API Simulator now.Applications Heavily Depend on APIs
It is common for an application to depend on the APIs of a dozen or more other applications and components.
These direct dependencies in turn have their own API dependencies, which may depend on even more APIs and so on...
Problems with API Dependencies Hinder Testing and Development
Testing and development come to a halt when any one of the direct and transitive API dependencies is needed but unavailable.
Development of API Clients can be at standstill waiting for the delivery of new APIs.
External APIs charge pay-per-transaction fees even in non-production environments.
Often times API dependencies enforce rate limiting making performance testing impossible.
The Solution? API Simulations!
API Simulations imitate real APIs or APIs not built yet
API Simulations mimic the direct dependencies.
An API Simulation behaves and outputs static and dynamic data if it was "the real deal".
API Simulations are always available and every time with the right test data.
News and Announcements
Embedded HTTP API Simulator is Here!
07 October 2017
It is a great day! You've asked and we delivered - embedded API Simulator you can start, stop, and use to simulate HTTP APIs from within your applications and tests. Built on the standalone API Simulator's foundation, the embedded API Simulator also offers an intuitive and simple to use Java DSL (Domain-Specific Language) for defining simulations and their simlets. Read more…
API Simulator 0.5.2 Release
28 May 2017
Version 0.5.2 of API Simulator is here! The focus of this release is new Test Data Management (TDM) capabilities to generate and use random values in API simulations. Read more…
API Simulator 0.5.1 Release
5 March 2017
We are pleased to announce the release of version 0.5.1 of API Simulator. This release improves various aspects of working with API Simulator and running the example simulations. Read more…
Docker Container Image for API Simulator v0.5.0
31 January 2017
We did not officially announce the release of the Docker container image for the previous version of API Simulator but here it is this time:
Following the recently released v0.5.0 of API Simulator, we built, tested, and published a new version of API Simulator’s Docker container image. Read more…
API Simulator 0.5.0 Release
29 January 2017
We are pleased to announce the release of version 0.5.0 of API Simulator. Among the changes in this release – enhanced and more capable request URI matching. Read more…
ICYMI: Announcing API Simulation Modeler (beta)!
3 October 2016
Do you still write code to mock APIs? Do you still muddle through configuration files? It is a good day for all of you, developers and testers, who have been creating and configuring API simulations “by hand” – API Simulation Modeler is here! Read more…
We invite you to learn more about API Simulator, download it, and run the examples. Why not even create API simulations to help your own testing and development?
Let us know what you think at [feedback at APISimulator.com]. Many thanks for your interest and support!
Happy Simulations,
The API Simulator Team