Dev tools · alternatives · 2026
24 alternatives to OpenAPI Schema Tools
openapi, schema, typescript, tools
Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. OpenAPI Schema Tools launched in 2023; newer entries below may have overtaken it.
- 1
Effortlessly discover API behaviour with a Chrome extension that automatically generates OpenAPI specifications in real time for any app or website.
2023 · github.com · its alternatives →
- 2
Generate, edit, lint & test your API workflow in one place
2025 · app.getelva.ai · its alternatives →
- 3
Swagger Editor▲207Beautiful API references from Swagger, OpenAPI spec
2023 · sandbox.scalar.com · its alternatives →
- 4
API design studio for product managers
2023 · conektto.io · its alternatives →
- 5
Hey HN, we’re building an open specification that lets agents discover and invoke APIs with natural language, built on the OpenAPI standard. agents.json clearly defines the contract between LLMs and API as a standard that's open, observable, and replicable. Here’s a walkthrough of how it works: https://youtu.be/kby2Wdt2Dtk?si=59xGCDy48Zzwr7ND. There’s 2 parts to this: 1. An agents.json file describes how to link API calls together into outcome-based tools for LLMs. This file sits alongside an OpenAPI file. 2. The agents.json SDK loads agents.json files as tools for an LLM that…
2025 · github.com · its alternatives →
- 6
Free online tool to test APIs and autogenerate documentation
2018 · swagger.io · its alternatives →
- 7
- 8
Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽🚀 - apideck-libraries/portman
2021 · github.com · its alternatives →
- 9TA
An OpenAPI alternative to describe REST APIs for type-safe code generation.
2023 · typeapi.org · its alternatives →
- 10
Hey, I'm Martyn and I recently joined Zuplo. OpenAPI is a huge part of what we do, but getting a document up to scratch out of the gate, especially if you're not super well versed in the actual specification and what you should use and when. So we built a suite of tools to help with this called Rate My OpenAPI. It will score your OpenAPI document out of 100, as well as giving you individual scores in 4 key areas; completeness, SDK generation, security and documentation. Along with the score, you also get details of what the issues, or errors are, as well as guidance on what they actually…
2024 · github.com · its alternatives →
- 11
Instantly generate openapi (OAS) 3.0.0 REST + GraphQL APIs
2019 · github.com · its alternatives →
- 12
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 →
- 13
A generator for OpenAPI 3. Contribute to egorsmkv/openapi3-generator development by creating an account on GitHub.
2020 · github.com · its alternatives →
- 14
Progressive Web App for generating mocked data from an OpenAPI specification - Fredx87/openapi-mock-generator
2020 · github.com · its alternatives →
- 15
FastOpenAPI is a library for generating and integrating OpenAPI schemas using Pydantic v2 and various frameworks (AioHttp, Django, Falcon, Flask, Quart, Sanic, Starlette, Tornado). - mr-fatalyst/fastopenapi
2025 · github.com · its alternatives →
- 16
Generate and share OpenAPI specs with AI
2025 · api.dev · its alternatives →
- 17
We built an open-source tool that scans your codebase and generates OpenAPI docs in minutes. Right now it supports Rails, Go, Python, and NodeJS frameworks, and we will keep adding more. It picks up routes, params, request bodies, and models directly from the code and outputs a clean OpenAPI spec you can drop into your workflow.
Nov 2025 · github.com · its alternatives →
- 18
- 19
With Stoplight, you can create OpenAPI descriptions, documentation, and mock servers much faster than other API tools — with no specialized knowledge required — all in one centralized platform.
2016 · stoplight.io · its alternatives →
- 20
2023 · openapistack.co · its alternatives →
- 21
Inspect webhook payloads with automatic type generation
2022 · typedwebhook.tools · its alternatives →
- 22
- 23
Build Typed GraphQL Queries in TypeScript without the code generation - acro5piano/typed-graphqlify
2018 · github.com · its alternatives →
- 24
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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 →