Dev tools · alternatives · 2026

24 alternatives to JSON Generator

Create mock and sample JSON using a powerful template syntax

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. JSON Generator launched in 2014; newer entries below may have overtaken it.

1. 1GJ
   Generate JSON mock data for testing/initial app development▲103

   Easily create complex JSON data structures using intuitive templates.

   2023 · jsongenerator.io · its alternatives →

2. 2
   Mock API Generator▲555

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

   2021 · retool.com · its alternatives →

3. 3
   Generate JSON▲77

   AI-generated dummy JSON - deploy in seconds

   2023 · jsonviewer.stack.hu · its alternatives →

4. 4
   Mock Turtle▲72

   GUI approach to generating realistic mock JSON data

   2022 · mockturtle.net · its alternatives →

5. 5
   Mockaroo▲354

   A realistic data generator to test your app

   2015 · mockaroo.com · its alternatives →

6. 6
   Pollux▲82

   Fake json data & json server mock API generator with JWT

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

7. 7
   MockThis▲80

   Generate mock data using AI

   2023 · its alternatives →

8. 8
   Data Populator▲149

   Sketch and XD plugin to populate mockups with real data.

   2019 · datapopulator.com · its alternatives →

9. 9
   Dynamic Email Template▲114

   Generate email template code with dynamic JSON data or API

   2019 · dynamic-template.xyz · its alternatives →

10. 10
    JSONMocker – generate JSON mock data by writing reusable JSON schemas▲5

    An easy to use web-based editor to create reusable json mock data schema files.

    2023 · laurawebdev.github.io · its alternatives →

11. 11
    JSON Generator▲8

    Tool for generating random data

    2019 · next.json-generator.com · its alternatives →

12. 12
    Types Generator▲61

    Types generator will auto generate TS Interfaces from JSON

    2022 · vineethtrv.github.io · its alternatives →

13. 13
    Mock Data Generator▲4

    Paste real JSON, get 1,000 coherent rows that match it

    Jun 2026 · jsondevtools.org · its alternatives →

14. 14
    JSON to Swift, JAVA, PHP and C# and Many▲6

    Template driven online code generator from json to model

    2019 · its alternatives →

15. 15
    JSON url▲119

    Mock backend with JSON generated from URL

    2022 · jsonurl.com · its alternatives →

16. 16
    JSONValid▲8

    Lightweight API generator and JSON validator

    2016 · jsonvalid.com · its alternatives →

17. 17
    Mock API Generator▲17

    API Mocks Prototyping

    2020 · mock-api-builder.vercel.app · its alternatives →

18. 18
    Jsontooncraft▲4

    Your complete developer toolkit.

    Nov 2025 · jsontooncraft.com · its alternatives →

19. 19
    JSONverify▲92

    A web tool that validates and format JSON objects

    2021 · jsonverify.com · its alternatives →

20. 20
    AI-Powered Mock API Generator▲86

    Generate customized, realistic mock data & APIs, via GPT

    2023 · its alternatives →

21. 21
    Mockreate▲66

    Figma plugin to generate & customise random data for designs

    2022 · figma.com · its alternatives →

22. 22
    Data Mock Generator▲3

    Generate Realistic Test Data — Instantly.

    Nov 2025 · data-mock-generator.com · its alternatives →

23. 23
    My first open-source project release – RandomJson▲56

    Provides a Kotlin/Java library to create a random json string - mangatmodi/RandomJson

    2019 · github.com · its alternatives →

24. 24
    The Changelog - #189: JSON API with Yehuda Katz▲66

    Yehuda's start as a programmer and the spec for building API

    2016 · changelog.com · 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 →