Life & fun · alternatives · 2026

24 alternatives to JSONMocker – generate JSON mock data by writing reusable JSON schemas

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

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. JSONMocker – generate JSON mock data by writing reusable JSON schemas launched in 2023; 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
   JSON Generator▲139

   Create mock and sample JSON using a powerful template syntax

   2014 · json-generator.com · its alternatives →

3. 3
   Mock Turtle▲72

   GUI approach to generating realistic mock JSON data

   2022 · mockturtle.net · its alternatives →

4. 4
   Mock API Generator▲555

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

   2021 · retool.com · its alternatives →

5. 5
   Mockaroo▲354

   A realistic data generator to test your app

   2015 · mockaroo.com · its alternatives →

6. 6
   MockThis▲80

   Generate mock data using AI

   2023 · its alternatives →

7. 7
   Pollux▲82

   Fake json data & json server mock API generator with JWT

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

8. 8
   Data Populator▲149

   Sketch and XD plugin to populate mockups with real data.

   2019 · datapopulator.com · its alternatives →

9. 9
   Generate JSON▲77

   AI-generated dummy JSON - deploy in seconds

   2023 · jsonviewer.stack.hu · its alternatives →

10. 10
    JSON For You – Visualize JSON in graph or table views▲211

    After two years of improvement, I think it's time to share it with you all. Here’s a quick overview: - Common features include validation, formatting, minification, and more. - Visualize JSON in a graph or table view. - Structured comparison with fallback to text comparison. - Navigate though JSON using JSON pointer. - Supports jq. Would love to hear the community's questions, thoughts and comments!

    2024 · github.com · its alternatives →

11. 11
    Mock Data Generator▲4

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

    Jun 2026 · jsondevtools.org · its alternatives →

12. 12
    Generate React forms from JSON form schemas▲107

    Generate, validate, and parse React forms using Mongoose-inspired JSON schemas - SteveVitali/react-form-generator

    2015 · github.com · its alternatives →

13. 13
    Mockreate▲66

    Figma plugin to generate & customise random data for designs

    2022 · figma.com · its alternatives →

14. 14
    Verify JSON using minimal schema▲91

    verify-json. Contribute to yusufnb/verify-json development by creating an account on GitHub.

    2020 · github.com · its alternatives →

15. 15
    Schema.ai▲6

    Generate realistic mock JSON data with AI.

    2025 · schema-ai-ten.vercel.app · its alternatives →

16. 16
    JSON Editor 1.0▲78

    Effortless JSON Editing, Anywhere!

    2023 · chromewebstore.google.com · its alternatives →

17. 17
    Mock API Generator▲17

    API Mocks Prototyping

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

18. 18JA
    JsonTree, a 3.53kb JavaScript tool for generating html trees from JSON▲78

    a lightweight dependency free javascript micro-library for making collapsable trees with JSON

    2017 · maxleiter.github.io · its alternatives →

19. 19
    JSONSchema to TypeScript compiler▲72

    Compile JSON Schema to TypeScript type declarations - bcherny/json-schema-to-typescript

    2017 · github.com · its alternatives →

20. 20
    DataMock▲8

    Generate free realistic mock data instantly for testing.

    Nov 2025 · its alternatives →

21. 21
    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 →

22. 22
    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 →

23. 23
    Data Mock Generator▲3

    Generate Realistic Test Data — Instantly.

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

24. 24
    JSON Schema Multi-Generator▲3

    Generate one JSON Schema from multiple samples

    Jun 2026 · jsondevtools.org · 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 →