Life & fun · alternatives · 2026

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Generate TypeScript Types from JSON Samples launched in 2017; newer entries below may have overtaken it.

1. 1
   Types Generator▲61

   Types generator will auto generate TS Interfaces from JSON

   2022 · vineethtrv.github.io · its alternatives →

2. 2
   quicktype▲88

   Generate beautiful, typesafe code from data

   2018 · quicktype.io · its alternatives →

3. 3
   JSON Generator▲139

   Create mock and sample JSON using a powerful template syntax

   2014 · json-generator.com · 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
   JSON to TypeScript Generator▲6

   Convert JSON Data to TypeScript Interface Automatically

   2023 · json-5.com · its alternatives →

6. 6
   An opinionated and statically-typed TypeScript SDK generator▲81

   Hi Hacker News! My name is Sagar, I’m working on a startup called Speakeasy - we’re making all APIs self-service. The platform is currently in beta, but we’re independently launching this tool which you can use to generate language-idiomatic, statically-typed TS SDKs from any public OpenAPI schemas. We hope to continue iterating on this to give devs a way to easily generate high fidelity client SDKs for all the major languages. Inspiration for this product is from past experiences struggling with OpenAPI. I was originally optimistic about using the OpenAPI tools to build out our offering,…

   2022 · easysdk.xyz · its alternatives →

7. 7GJ
   Generate JSON mock data for testing/initial app development▲103

   Easily create complex JSON data structures using intuitive templates.

   2023 · jsongenerator.io · its alternatives →

8. 8
   TypeScript to GraphQL conversion tool with type inference▲90

   Build Typed GraphQL Queries in TypeScript without the code generation - acro5piano/typed-graphqlify

   2018 · github.com · its alternatives →

9. 9
   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 →

10. 10
    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 →

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
    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
    Mock Turtle▲72

    GUI approach to generating realistic mock JSON data

    2022 · mockturtle.net · its alternatives →

14. 14
    Typed JSON▲7

    Powerful json conversion tools

    2025 · its alternatives →

15. 15
    Typescript to Mock Data AI

    Paste your typescript type and generate real word like data.

    2024 · mockdataai.com · its alternatives →

16. 16
    AutoInfer▲3

    Generate Complex TypeScript Interfaces in seconds

    2025 · dub.sh · its alternatives →

17. 17
    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 →

18. 18
    Generate JSON▲77

    AI-generated dummy JSON - deploy in seconds

    2023 · jsonviewer.stack.hu · its alternatives →

19. 19
    quicktype converts JSON, TypeScript, GraphQL to types in 18 languages▲8

    2020 · app.quicktype.io · its alternatives →

20. 20
    Tygo – Generating TypeScript typings from Go code▲19

    Generate Typescript types from Golang source code. Contribute to gzuidhof/tygo development by creating an account on GitHub.

    2022 · github.com · its alternatives →

21. 21
    JSON to Swift, JAVA, PHP and C# and Many▲6

    Template driven online code generator from json to model

    2019 · its alternatives →

22. 22
    Res(ts): Auto-Generate TypeScript Models for Django Projects▲54

    Contribute to peter-woyzbun/rests development by creating an account on GitHub.

    2018 · github.com · its alternatives →

23. 23
    TSON▲11

    Convert json to typescript interfaces instantly

    2025 · tson.vercel.app · its alternatives →

24. 24
    Mongoose Schema to JSON Generator▲7

    Smart tool doe Mongoose Schema to JSON Generator

    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 →