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25 alternatives · from api mocking tools

Alternatives to Microcks

Microcks brings API mocking and microservice testing together across OpenAPI, AsyncAPI, gRPC/Protobuf, GraphQL, and SOAP. It can reuse examples, generate realistic responses, and transform mock data, while provider and consumer contract tests check live implementations and specification versions. Its free, open-source distribution supports laptop, on-premises, and cloud deployment, with CI/CD integrations for automating checks. A different tool may fit better if you want…

18.1

Mockzilla turns OpenAPI specifications or plain JSON files into hosted mock APIs for frontend work, integration tests and demos.

Free planOpen sourceWebAPILinux
From $10 a month
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27.9
Beeceptor logo

Beeceptor is a developer-focused API simulation platform for creating mocks, virtualizing services, testing contracts, and simulating failures.

Free planWebAPILinux
From $10 a month
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37.4

Mockfly creates hosted mock REST API endpoints for teams that need to build and test before a backend is ready.

Free planWebAPIExtension
From €150 a year
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  1. 4

    MockAPI

    MockAPI helps users create REST API endpoints, generate custom data, and interact with it through a RESTful interface.

    Free planWebAPI
    7.2From $35 a year
    Visit
  2. 5

    Knockout API

    Knockout API provides image and video processing through a browser app and API.

    Free planWebAPI
    7.0From $10 a month
    Visit
  3. 6Mockoon logo

    Mockoon

    Mockoon is a free, open-source tool for designing and running mock APIs locally.

    WebAPILinuxmacOS
    6.8From €10 a month
    Visit
  4. 7Hoverfly logo

    Hoverfly

    Hoverfly Cloud is a hosted API simulation and mocking service for development and testing that should not rely on live API dependencies.

    WebAPILinuxmacOS
    6.7From $10 a month
    Visit
  5. 8MockServer logo

    MockServer

    MockServer is free, self-hosted software for mocking and proxying HTTP, HTTPS, and gRPC services in isolated, deterministic testing.

    Free planWebAPILinuxmacOS
    6.6Free plan
    Visit
  6. 9

    moqapi.dev

    moqapi.dev is a web and API platform for creating live mock endpoints from API specifications.

    Free planWebAPI
    6.6From $29 a month
    Visit
  7. 10

    Mockttp

    Mockttp is an open-source JavaScript library for intercepting, transforming, and testing HTTP requests and responses.

    Free planWebLinuxmacOSSelf-hosted
    6.5Free plan
    Visit
  8. 11WireMock logo

    WireMock

    WireMock Cloud creates simulated API environments for development, testing, and AI coding workflows.

    Free planWebAPILinuxmacOS
    6.5Free plan
    Visit
  9. 12

    MockWebServer

    MockWebServer is a free, open-source test library for developers checking HTTP, HTTPS, or HTTP/2 clients.

    Free planAndroid
    6.4Free plan
    Visit
  10. 13WireMock logo

    WireMock

    WireMock simulates APIs and software dependencies, letting teams test without relying on those services, explore edge cases, and develop dependent features in parallel.

    Free planWebAPILinuxSelf-hosted
    6.4Free plan
    Visit
  11. 14Stoplight Prism logo

    Stoplight Prism

    Stoplight Prism is a free, open-source command-line HTTP server for turning OpenAPI descriptions or Postman Collections into mock API servers.

    Free planWebAPISelf-hosted
    6.3Free plan
    Visit
  12. 15

    Mocki

    WebAPISelf-hosted
    6.1From $15 a month
    Visit
  13. 16

    Imposter

    Imposter is an open-source tool for creating interactive mock systems for development and QA.

    LinuxmacOSSelf-hostedWindows
    5.7
    Visit
  14. 17

    json-server

    json-server creates a fake REST API without coding, for testing and prototyping.

    Free planAPISelf-hosted
    5.7Free plan
    Visit
  15. 18

    OpenAPI Mock

    OpenAPI Mock is a free, open-source API mock server that generates response data from OpenAPI specifications.

    LinuxSelf-hostedWindows
    5.6
    Visit
  16. 19

    Mirage JS

    Mirage JS is a free, open-source JavaScript library for mocking backend APIs during frontend development and testing.

    Web
    5.5
    Visit
  17. 20Mock Service Worker logo

    Mock Service Worker

    Mock Service Worker (MSW) is a free, open-source API mocking library for browser and Node.js applications.

    WebSelf-hosted
    5.5
    Visit
  18. 21

    OpenAPI Server

    OpenAPI Server is a local mock server for API development and end-to-end testing.

    APISelf-hosted
    5.5
    Visit
  19. 22

    Pretender.js

    Pretender.js is a free, open-source mock server library for XMLHttpRequest and Fetch in the browser.

    Web
    5.5
    Visit
  20. 23

    MockPilot

    Extension
    5.3
    Visit
  21. 24

    Parasoft Virtualize

    WebLinuxmacOSWindows
    5.3
    Visit
  22. 25

    API-Mocked

    API-Mocked is a free, open-source, self-hosted server for mocking APIs and serving known content, usually static.

    Self-hosted
    5.2
    Visit

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