Dev tools · alternatives · 2026

24 alternatives to Mock Turtle

GUI approach to generating realistic mock JSON data

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Mock Turtle launched in 2022; newer entries below may have overtaken it.

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

   2023 · jsongenerator.io · its alternatives →

2. 2
   JSON Generator▲139

   Create mock and sample JSON using a powerful template syntax

   2014 · its alternatives →

3. 3
   MockThis▲80

   Generate mock data using AI

   2023 · its alternatives →

4. 4
   Mock API Generator▲548

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

   2021 · its alternatives →

5. 5
   Data Populator▲149

   Sketch and XD plugin to populate mockups with real data.

   2019 · its alternatives →

6. 6
   Mock Data Generator▲4

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

   Jun 2026 · jsondevtools.org · its alternatives →

7. 7
   Data Mock Generator▲3

   Generate Realistic Test Data — Instantly.

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

8. 8
   Mockaroo▲357

   A realistic data generator to test your app

   2015 · its alternatives →

9. 9
   JSON url▲119

   Mock backend with JSON generated from URL

   2022 · its alternatives →

10. 10
    Mockreate▲66

    Figma plugin to generate & customise random data for designs

    2022 · its alternatives →

11. 11
    Generate JSON▲77

    AI-generated dummy JSON - deploy in seconds

    2023 · its alternatives →

12. 12JG
    JSONMocker – generate JSON mock data by writing reusable JSON schemas▲5

    2023 · laurawebdev.github.io · its alternatives →

13. 13
    AI-Powered Mock API Generator▲86

    Generate customized, realistic mock data & APIs, via GPT

    2023 · its alternatives →

14. 14JF
    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 →

15. 15
    MockBlast▲11

    Generate 1M+ rows of SQL/Mongo data instantly & fast.

    Jan 2026 · its alternatives →

16. 16
    MockDataGenerator▲6

    Mockdata in 10 seconds. 99¢/ export. JSON / CSV / SQL INSERT

    Sep 2025 · mockdata-generator.toolsfor99cents.com · its alternatives →

17. 17
    Mock Data▲5

    Generate realistic mock data for apps - quick & easy!

    2025 · its alternatives →

18. 18
    Loremapis.com▲8

    Get mock APIs from your schema

    2025 · its alternatives →

19. 19
    Mock Data▲4

    Generate realistic mock data for apps - quick & easy!

    2025 · its alternatives →

20. 20
    Schema.ai▲6

    Generate realistic mock JSON data with AI.

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

21. 21JA
    JsonTree, a 3.53kb JavaScript tool for generating html trees from JSON▲78

    2017 · maxleiter.github.io · its alternatives →

22. 22CM
    Creating mock data using TypeScript interfaces▲57

    2023 · butlermock.online · its alternatives →

23. 23
    JSONing Mock API▲6

    Free and open source fake API for testing and prototyping

    Nov 2025 · jsoning.com · its alternatives →

24. 24
    Fake Power▲2

    Generate fake JSON based on your schema with tons of data

    2023 · 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 →