Dev tools · alternatives · 2026

24 alternatives to MockType.dev

Instant JSON to Type, Schema & Model for 20+ languages.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

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
   Mockaroo▲354

   A realistic data generator to test your app

   2015 · mockaroo.com · its alternatives →

3. 3
   Mock API Generator▲555

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

   2021 · retool.com · its alternatives →

4. 4
   Quicktype – it's like Uber, but for JSON▲34

   Millions of developers have used quicktype to generate ten billion lines of typesafe models, serializers, and validators from JSON, JSON Schema, and GraphQL in TypeScript, Python, Swift, C#, Go, Rust, Kotlin, Java, C++, Zod and more. Use it in the browser, from the command line, or give it to your A

   2017 · quicktype.io · its alternatives →

5. 5
   quicktype▲88

   Generate beautiful, typesafe code from data

   2018 · quicktype.io · its alternatives →

6. 6
   JSON Generator▲139

   Create mock and sample JSON using a powerful template syntax

   2014 · json-generator.com · its alternatives →

7. 7
   Mock Maker▲93

   Effortless mock APIs for seamless testing & prototyping

   2024 · its alternatives →

8. 8
   Mock Turtle▲72

   GUI approach to generating realistic mock JSON data

   2022 · mockturtle.net · its alternatives →

9. 9
   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 →

10. 10MO
    Mockit – Open-source app to create and configure HTTP mocked endpoints▲158

    2019 · mockit.netlify.com · its alternatives →

11. 11
    JSONSchema to TypeScript compiler▲72

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

    2017 · github.com · its alternatives →

12. 12
    Mocktotype▲149

    A simple tool to display your mockups in a browser

    2015 · its alternatives →

13. 13
    Developer Toolbox▲79

    Access 15+ carefully constructed developer tools

    2022 · developertoolbox.app · its alternatives →

14. 14
    Types Generator▲61

    Types generator will auto generate TS Interfaces from JSON

    2022 · vineethtrv.github.io · its alternatives →

15. 15
    Jsontooncraft▲4

    Your complete developer toolkit.

    Nov 2025 · jsontooncraft.com · its alternatives →

16. 16
    MockPack▲2

    Offline-first mock data engine for developers.

    Jun 2026 · mockpack.netlify.app · its alternatives →

17. 17CM
    Creating mock data using TypeScript interfaces▲57

    2023 · butlermock.online · its alternatives →

18. 18
    TypeScript types that conform to JSON schemas without code generation▲17

    Let JSON play nicely with Typescript. Contribute to ostrowr/ts-json-validator development by creating an account on GitHub.

    2019 · github.com · its alternatives →

19. 19
    Mocka▲3

    Instant Mock APIs for Devs, No JSON Required!

    2025 · mocka.ouim.me · its alternatives →

20. 20
    Mockden▲12

    Rapid api prototyping & mock data

    2025 · its alternatives →

21. 21
    A tool to Convert JSON schemas into TypeScript Deno classes▲43

    Hello all To preface this is just something I've been making as a learning exercise, so all feedback is appreciated. This is a tool that converts JSON schemas into TypeScript utility classes for use in Deno. Automatic Type Generation: Typescript interfaces for the compressed and uncompressed versions of your data. Compression & Decompression: Compress and decompress your data. Validation: Built-in data validation using Ajv ensures your data adheres to the schema. Reusability: Once generated, the utility classes can be used in other Deno projects. It currently only supports a subset of JSON…

    2023 · github.com · its alternatives →

22. 22
    Fake API for Devs▲8

    Free mock api generator for developers | instant test data

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

23. 23
    FixtureKit▲31

    Turn TypeScript interfaces into realistic mock data

    Jun 2026 · fixture-kit.vercel.app · its alternatives →

24. 24
    Mock Data Generator▲4

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

    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 →