Dev tools · alternatives · 2026

24 alternatives to AutoInfer

Generate Complex TypeScript Interfaces in seconds

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

1. 1
   Types Generator▲61

   Types generator will auto generate TS Interfaces from JSON

   2022 · its alternatives →

2. 2
   quicktype▲88

   Generate beautiful, typesafe code from data

   2018 · its alternatives →

3. 3
   Mock API Generator▲548

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

   2021 · its alternatives →

4. 4RT
   Res(ts): Auto-Generate TypeScript Models for Django Projects▲54

   2018 · github.com · its alternatives →

5. 5AT
   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 →

6. 6AO
   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. 7
   JSON to TypeScript Generator▲6

   Convert JSON Data to TypeScript Interface Automatically

   2023 · its alternatives →

8. 8
   Generate JSON▲77

   AI-generated dummy JSON - deploy in seconds

   2023 · its alternatives →

9. 9AG
   Auto-generate an OpenAPI spec by listening to localhost▲178

   Hey HN! We've developed OpenAPI AutoSpec, a tool for automatically generating OpenAPI specifications from localhost network traffic. It’s designed to simplify the creation of API documentation by just using your website or service, especially useful when you're pressed for time. Documenting endpoints one by one sucks. This project originated from us needing it at our past jobs when building 3rd-party integrations. It acts as a local server proxy that listens to your application’s HTTP traffic and automatically translates this into OpenAPI 3.0 specs, documenting endpoints, requests, and…

   2024 · github.com · its alternatives →

10. 10GT
    Generate TypeScript Types from JSON Samples▲5

    2017 · jvilk.com · its alternatives →

11. 11TT
    TypeScript types that conform to JSON schemas without code generation▲17

    2019 · github.com · its alternatives →

12. 12JT
    JSONSchema to TypeScript compiler▲72

    2017 · github.com · its alternatives →

13. 13
    Mock Turtle▲72

    GUI approach to generating realistic mock JSON data

    2022 · its alternatives →

14. 14AG
    Automatically generate fast validation functions for TypeScript types▲5

    2020 · github.com · its alternatives →

15. 15AO
    Automock – Open-Source Project for Simpler Unit Testing in TypeScript▲11

    2023 · github.com · its alternatives →

16. 16
    MockThis▲80

    Generate mock data using AI

    2023 · its alternatives →

17. 17AG
    Auto generate REST API from Mongoose schemas▲17

    2020 · github.com · its alternatives →

18. 18
    PJSON.live▲15

    Format, validate & convert json to typescript instantly

    Nov 2025 · pjson.live · its alternatives →

19. 19TO
    Turn OpenAPI to Universal TypeScript SDKs▲27

    Hi HN! We’re excited to share our new code generator that lets you ship high-quality TypeScript SDKs, that your users will love, from your OpenAPI documents. Our ongoing goal is to help you build one SDK that runs anywhere modern JavaScript runs. This includes new runtimes like Deno and Bun in addition to the ever-popular Node.js. Additionally, the popularity of AI has meant server-sent events and file streaming are also commonplace - we wanted to cover these use cases too. This explosion in new runtimes and ways of interacting with APIs shifts cognitive burden on API developers often having…

    2024 · speakeasyapi.dev · its alternatives →

20. 20CM
    Compiletime macro to auto generate fast validators for TypeScript types▲7

    2020 · github.com · its alternatives →

21. 21TG
    Tygo – Generating TypeScript typings from Go code▲19

    2022 · github.com · its alternatives →

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

    2023 · butlermock.online · its alternatives →

23. 23
    Typescript to Mock Data AI

    Paste your typescript type and generate real word like data.

    2024 · its alternatives →

24. 24SA
    SpectaQL – auto-generate GraphQL API documentation▲51

    2021 · github.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 →