Dev tools · alternatives · 2026

24 alternatives to Mock API Generator

API Mocks Prototyping

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mock API Generator launched in 2020; newer entries below may have overtaken it.

1. 1
   Mock API Generator▲555

   Generate custom data & API to build apps in less than 30s

   2021 · retool.com · its alternatives →

2. 2
   AI-Powered Mock API Generator▲86

   Generate customized, realistic mock data & APIs, via GPT

   2023 · its alternatives →

3. 3
   Mockable▲114

   For rapid API prototyping: create REST/SOAP mocks in 3 sec

   2015 · its alternatives →

4. 4
   MockThis▲80

   Generate mock data using AI

   2023 · its alternatives →

5. 5
   Mock Maker▲93

   Effortless mock APIs for seamless testing & prototyping

   2024 · its alternatives →

6. 6
   MockREST – Create REST APIs from Your JSON Content▲12

   Mock REST endpoints in seconds. Test without backend delays. Built for developers who need reliable mock data now.

   2017 · mockrest.com · its alternatives →

7. 7
   JSONing Mock API▲6

   Free and open source fake API for testing and prototyping

   Nov 2025 · jsoning.com · its alternatives →

8. 8
   MockAPI Dog▲122

   Instant mock REST & LLM APIs - free, no signup required

   Feb 2026 · mockapi.dog · its alternatives →

9. 9
   JSON Generator▲139

   Create mock and sample JSON using a powerful template syntax

   2014 · json-generator.com · its alternatives →

10. 10
    JSON url▲119

    Mock backend with JSON generated from URL

    2022 · jsonurl.com · its alternatives →

11. 11MO
    Mockit – Open-source app to create and configure HTTP mocked endpoints▲158

    2019 · mockit.netlify.com · its alternatives →

12. 12
    Mockaroo▲354

    A realistic data generator to test your app

    2015 · mockaroo.com · its alternatives →

13. 13
    Loremapis.com▲8

    Get mock APIs from your schema

    2025 · its alternatives →

14. 14
    Pollux▲82

    Fake json data & json server mock API generator with JWT

    2021 · mohammedal-rowad.github.io · its alternatives →

15. 15
    Mock Turtle▲72

    GUI approach to generating realistic mock JSON data

    2022 · mockturtle.net · its alternatives →

16. 16MS
    Mocktastic – Simple, Offline mock REST APIs for your entire team▲43

    2018 · mocktastic.com · its alternatives →

17. 17
    Mockoon – mock REST APIs in seconds▲68

    Mockoon is the easiest and quickest way to run mock REST API servers. No remote deployment, no account required, free, open source and cross-platform.

    2017 · mockoon.com · its alternatives →

18. 18
    Mocklets▲82

    A HTTP-based API simulator to assist parallel development 🛠️

    2018 · mocklets.com · its alternatives →

19. 19GJ
    Generate JSON mock data for testing/initial app development▲103

    Easily create complex JSON data structures using intuitive templates.

    2023 · jsongenerator.io · its alternatives →

20. 20
    Fake API for Devs▲8

    Free mock api generator for developers | instant test data

    Nov 2025 · fakeapifordevs.vercel.app · its alternatives →

21. 21
    FakeURL▲6

    Free online api mocking tool | mock api generator

    2025 · fakeurl.dev · its alternatives →

22. 22
    Reffresh▲91

    Simple, no code, mock APIs

    2024 · reffresh.com · its alternatives →

23. 23ST
    Simple tool to generate mock APIs for testing▲25

    2024 · endpts.io · its alternatives →

24. 24
    Mockden▲12

    Rapid api prototyping & mock data

    2025 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →