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  • https://.com/enzonotario/vitepress-openapi

  • https://.com/hey-api/openapi-ts

  • https://.com/rest-sh/restish

  • https://.com/usebruno/bruno

  • https://.com/AndrewWalsh/openapi-devtools

  • https://.com/OAI/learn.openapis.org

  • https://.com/a-chacon/oas_rails

  • https://.com/bump-sh-examples/train-travel-api

  • https://.com/danielgtaylor/huma

  • https://.com/daveshanley/vacuum

  • https://.com/fastapi/fastapi

  • https://.com/jcrist/msgspec

  • https://.com/juhaku/utoipa

  • https://.com/microsoft/kiota

  • https://.com/microsoft/typespec

  • https://.com/oapi-codegen/oapi-codegen

  • https://.com/openapi-generators/openapi-python-client

  • https://.com/openapi-json-schema-tools/openapi-json-schema-generator

  • https://.com/openapi-ts/openapi-typescript

  • https://.com/pb33f/libopenapi

  • https://.com/pb33f/libopenapi-validator

  • https://.com/python-openapi/openapi-schema-validator

  • https://.com/rookie-luochao/openapi-ui

  • https://.com/scalar/scalar

  • https://.com/zaghaghi/openapi-tui

  • Apimatic Transformer

    https://apimatic.io/transformer

    Transform API Descriptions to formats to and from RAML, API Blueprint, OAI v2/v3, WSDL, etc.
  • Documentation

    https://.com/OAI/Documentation

    OpenAPI - Getting started, and the specification explained
    Stars: 35 License: CC-BY-4.0
  • Flotiq

    https://flotiq.com/

    Flotiq is an API-first content management platform that works with any technology, framework, and language by utilizing OpenApi to create and document your personal APIs.
  • GHLocalApi

    https://.com/rithvikvibhu/GHLocalApi

    (Unofficial) Google Home local API documentation.
    Stars: 419 License: MIT
  • KaiZen-OpenAPI-Editor

    https://.com/RepreZen/KaiZen-OpenAPI-Editor

    Eclipse Editor for the Swagger-OpenAPI Description Language
    Stars: 110 License: EPL-1.0
  • KaiZen-OpenApi-Parser

    https://.com/RepreZen/KaiZen-OpenApi-Parser

    High-performance Parser, Validator, and Java Object Model for OpenAPI 3.x
    Stars: 130
  • OData.OpenAPI

    https://.com/xuzhg/OData.OpenAPI

    OData to Open API
    Stars: 6
  • OpenAPI

    https://.com/zweidenker/OpenAPI

    A pharo implementation of OpenAPI 3.0.1
    Stars: 20 License: MIT
  • OpenAPI-Viewer

    https://.com/mrin9/OpenAPI-Viewer

    OpenApi viewer Implemented using Vue
    Stars: 94 License: MIT
  • OpenAPI.NET

    https://.com/microsoft/OpenAPI.NET

    The OpenAPI.NET SDK contains a useful object model for OpenAPI documents in .NET along with common serializers to extract raw OpenAPI JSON and YAML documents from the model.
    Stars: 1119 License: MIT
  • OpenAPI.NET.OData

    https://.com/microsoft/OpenAPI.NET.OData

    Generates OpenAPI document from OData CSDL
    Stars: 175 License: MIT
  • OpenAPIParser

    https://.com/Dzoukr/OpenAPIParser

    Simple Open API F# Parser
    Stars: 11 License: MIT
  • OpenAPITypeProvider

    https://.com/fsprojects/OpenAPITypeProvider

    F# type provider for Open API specification
    Stars: 64
  • OpenAPIValidators

    https://.com/openapi-library/OpenAPIValidators

    Use Jest or Chai to assert that HTTP responses satisfy an OpenAPI spec
    Stars: 173 License: MIT
  • RapiDoc

    https://.com/rapi-doc/RapiDoc

    RapiDoc -WebComponent for OpenAPI Spec
    Stars: 1274 License: MIT
  • RapiPdf

    https://.com/mrin9/RapiPdf

    PDF generation from OpenAPI / Swagger Spec
    Stars: 236 License: MIT
  • RepreZen API Studio

    https://www.reprezen.com/

    RepreZen API Studio is an integrated workbench that brings API-first design into focus for your whole team, harmonizes your API designs, and generates APIs that click into client apps.
  • er

    https://.com/rinold/er

    Vapor simple CRUD-server generator
    Stars: 7 License: MIT
  • SwaggerProvider

    https://.com/fsprojects/SwaggerProvider

    F# generative Type Provider for Swagger
    Stars: 240 License: Unlicense
  • Tavis.OpenApi

    https://.com/tavis-software/Tavis.OpenApi

    Parser for OpenAPI Specification
    Stars: 17 License: Apache-2.0
  • Unchase.OpenAPI.Connectedservice

    https://.com/unchase/Unchase.OpenAPI.Connectedservice

    :scroll: Visual Studio extension to generate OpenAPI (Swagger) web service reference.
    Stars: 84 License: Apache-2.0
  • Vert.x Web API Contract

    http://vertx.io/docs/#web

    Create an API endpoint with Vert.x 3 and OpenAPI 3 with automatic requests validation
  • aio-openapi

    https://.com/quantmind/aio-openapi

    A python module for building OpenAPI compliant asynchronous Rest Servers. Auto documentation, serialization and validation in the same unified API.
    Stars: 29 License: BSD-3-Clause
  • aiohttp-swagger3

    https://.com/hh-h/aiohttp-swagger3

    Library for swagger documentation browsing and validating aiohttp requests using swagger specification 3.0
    Stars: 58 License: Apache-2.0
  • aiopenapi3

    https://.com/commonism/aiopenapi3

    Python OpenAPI3 client/validator w\ {a,}syncio
    Stars: 4 License: BSD-3-Clause
  • angular-swagger-ui

    https://.com/Orange-OpenSource/angular-swagger-ui

    An angularJS implementation of Swagger UI
    Stars: 134 License: MIT
  • api-docs

    https://.com/hummingbird-me/api-docs

    ๐Ÿค– API documentation for Kitsu
    Stars: 100
  • api2html

    https://.com/tobilg/api2html

    A CLI tool to transform Swagger/OpenAPI/AsyncAPI docs to beautiful HTML pages via Shins/Widdershins.
    Stars: 104 License: MIT
  • apicurio-studio

    http://www.apicur.io/

    Open Source API Design
    Stars: 1032 License: Apache-2.0
  • apidom

    https://.com/swagger-api/apidom

    Semantic parser for API specifications
    Stars: 36
  • apigen.springboot

    https://.com/apiaddicts/apigen.springboot

    Apigen allow generate springboot archetipe using openapi file as mapping tool between the openapi definition and the database.
    Stars: 21 License: LGPL-3.0
  • apispec

    https://.com/cxxxr/apispec

    A Common Lisp library for handling Web API requests and responses.
    Stars: 27
  • apispec

    https://.com/marshmallow-code/apispec

    A pluggable API specification generator. Currently supports the OpenAPI Specification (f.k.a. the Swagger specification)..
    Stars: 1020 License: MIT
  • apisprout

    https://.com/danielgtaylor/apisprout

    Lightweight, blazing fast, cross-platform OpenAPI 3 mock server with validation
    Stars: 633 License: MIT
  • at-your-service

    https://.com/AndrewWalsh/at-your-service

    A developer tool for API observability on the browser. Generate OpenAPI specifications and code from network traffic
    Stars: 3 License: MIT
  • awesome-openapi3

    https://.com/APIs-guru/awesome-openapi3

    ๐Ÿ˜Ž A list of awesome projects related to OpenAPI 3.0.x, curated by the community
    Stars: 672 License: BSD-3-Clause
  • aws2openapi

    https://.com/APIs-guru/aws2openapi

    Amazon Web Services API description to OpenAPI 3.0 definition
    Stars: 60 License: MIT
  • beacon-APIs

    https://.com/ethereum/beacon-APIs

    Collection of RESTful APIs provided by Ethereum Beacon nodes
    Stars: 241 License: CC0-1.0
  • bricks

    https://.com/pace/bricks

    A standard library for microservices.
    Stars: 161 License: MIT
  • class-validator-jsonschema

    https://.com/epiphone/class-validator-jsonschema

    Convert class-validator-decorated classes into JSON schema
    Stars: 188 License: MIT
  • cli

    https://.com/mockoon/cli

    Mockoon's official CLI. Deploy your mock APIs anywhere.
    Stars: 175 License: MIT
  • create-openapi-repo

    https://.com/Redocly/create-openapi-repo

    ๐Ÿค– Generator for GH repo to help you manage the OpenAPI definition lifecycle
    Stars: 679 License: MIT
  • data-fair

    https://.com/data-fair/data-fair

    Findable, Accessible, Interoperable and Reusable Data. A complete open-source solution for your open and private data needs. French only for the time being, internationalization coming soon.
    Stars: 25 License: AGPL-3.0
  • data-studio

    https://.com/data-studio/data-studio

    DataStudio by Eviratec (datastudio.xyz) as a WordPress Theme
    Stars: 3 License: 
  • disapi

    https://.com/matthewtrask/disapi

    An API around Walt World Resort.
    Stars: 4
  • dosonarapi

    https://.com/apiaddicts/dosonarapi

    doSonarAPI is a set of rules to validate OpenAPI / Swagger api definitions in SonarQube, you also need to install the evaluation engine.
    Stars: 3 License: LGPL-3.0
  • dredd

    https://.com/apiaryio/dredd

    Language-agnostic HTTP API Testing Tool
    Stars: 4199 License: MIT
  • dredd-transactions

    https://.com/apiaryio/dredd-transactions

    Compiles a list of HTTP transactions (request-response pairs) from an API description document
    Stars: 10 License: MIT
  • drf-spectacular

    https://.com/tfranzel/drf-spectacular

    Sane and flexible OpenAPI 3 schema generation for Django REST framework.
    Stars: 1612 License: BSD-3-Clause
  • ecosystem-api

    https://.com/kinecosystem/ecosystem-api

    Apis for client server communication
    Stars: 3
  • elements

    https://.com/stoplightio/elements

    Build beautiful, interactive API Docs with embeddable React or Web Components, powered by OpenAPI and Markdown.
    Stars: 952 License: Apache-2.0
  • exegesis-koa

    https://.com/confuser/exegesis-koa

    Koa middleware to handle OpenAPI 3.x.
    Stars: 3 License: MIT
  • express-gateway-plugin-openapi3-mock-server

    https://.com/Szasza/express-gateway-plugin-openapi3-mock-server

    An OpenAPI 3 mock server plugin for Express Gateway
    Stars: 8 License: 
  • express-jsdoc-swagger

    https://.com/BRIKEV/express-jsdoc-swagger

    Swagger OpenAPI 3.x generator
    Stars: 224 License: MIT
  • express-openapi-validator

    https://.com/cdimascio/express-openapi-validator

    ๐Ÿฆ‹ Auto-validates api requests, responses, and securities using ExpressJS and an OpenAPI 3.x specification
    Stars: 762 License: MIT
  • fastapi

    https://fastapi.tiangolo.com

    FastAPI framework, high performance, easy to learn, fast to code, ready for production
    Stars: 56702 License: MIT
  • fastapi-gino-arq-uvicorn

    https://.com/leosussan/fastapi-gino-arq-uvicorn

    High-performance Async REST API, in Python. FastAPI + GINO + Arq + Uvicorn (w/ Redis and PostgreSQL).
    Stars: 367 License: MIT
  • fastapi-plugins

    https://.com/madkote/fastapi-plugins

    FastAPI framework plugins
    Stars: 263 License: MIT
  • fastify-oas

    https://.com/SkeLLLa/fastify-oas

    Fastify OpenAPI plugin.
    Stars: 72 License: MIT
  • fizz

    https://.com/wI2L/fizz

    :lemon: Gin wrapper with OpenAPI 3 spec generation
    Stars: 162 License: MIT
  • fn-openapi-v3

    https://.com/denismakogon/fn-openapi-v3

    Fn-powered serverless application OpenAPI v3.0.0 generator tool
    Stars: 3 License: Apache-2.0
  • full-stack-fastapi-couchbase

    https://.com/tiangolo/full-stack-fastapi-couchbase

    Full stack, modern web application generator. Using FastAPI, Couchbase as database, Docker, automatic HTTPS and more.
    Stars: 392 License: MIT
  • full-stack-fastapi-postgresql

    https://.com/tiangolo/full-stack-fastapi-postgresql

    Full stack, modern web application generator. Using FastAPI, PostgreSQL as database, Docker, automatic HTTPS and more.
    Stars: 11631 License: MIT
  • fusio

    http://fusio-project.org/

    Open source API management platform
    Stars: 1897 License: Apache-2.0
  • gen

    https://.com/wzshiming/gen

    Gen generates efficient web routing source code and documentation from annotations
    Stars: 50 License: MIT
  • generator-express-no-stress

    https://.com/cdimascio/generator-express-no-stress

    ๐Ÿš‚ A Yeoman generator for Express.js based 12-factor apps and apis
    Stars: 580 License: MIT
  • generator-express-no-stress-typescript

    https://.com/cdimascio/generator-express-no-stress-typescript

    ๐Ÿš„ A Yeoman generator for Express.js based 12-factor apps and apis using Typescript
    Stars: 347 License: MIT
  • generators

    https://.com/wrannaman/generators

    API Generator - instantly generate REST and GraphQL APIs (openapi (OAS) 3.0.0)
    Stars: 235 License: MIT
  • gnostic

    https://.com/google/gnostic

    A compiler for APIs described by the OpenAPI Specification with plugins for code generation and other API support tasks.
    Stars: 1696 License: Apache-2.0
  • go-openapi

    https://.com/nasa9084/go-openapi

    OpenAPI Specification (OAS) 3.0 implementation for Go
    Stars: 39 License: MIT
  • gopenapi

    https://.com/VanMoof/gopenapi

    An OpenAPI v3 utility for Go
    Stars: 20 License: MIT
  • gradle-swagger-plugin

    https://.com/Bankdata/gradle-swagger-plugin

    Gradle plugin for generating OpenAPI specification using Swagger
    Stars: 3 License: MIT
  • hmt

    https://.com/meeshkan/hmt

    HTTP Mocking Toolkit
    Stars: 50 License: MIT
  • http-rider

    https://.com/namuan/http-rider

    Simple and Powerful desktop client for working with JSON APIs
    Stars: 27 License: MIT
  • http-router

    https://.com/sunrise-php/http-router

    :tada: Release 2.0 is released! Very fast HTTP router for PHP 7.1+ based on PSR-7 and PSR-15 with support for annotations/attributes and OpenAPI (Swagger) Specification
    Stars: 150 License: MIT
  • intellij-openapi-generator

    https://.com/jimschubert/intellij-openapi-generator

    Intellij Plugin for openapi-generator
    Stars: 76 License: Apache-2.0
  • json-schema-validator

    https://.com/networknt/json-schema-validator

    A fast Java JSON schema validator that supports draft V4, V6, V7, V2019-09 and V2020-12
    Stars: 599 License: Apache-2.0
  • keycloak-openapi

    https://.com/ccouzens/keycloak-openapi

    OpenAPI definitions for Keycloak's Admin API
    Stars: 139
  • kin-openapi

    https://.com/getkin/kin-openapi

    OpenAPI 3.0 (and Swagger v2) implementation for Go (parsing, converting, validation, and more)
    Stars: 1888 License: MIT
  • knife4j

    https://.com/xiaoymin/knife4j

    Knife4j is a set of Swagger2 and OpenAPI3 All-in-one enhancement solution
    Stars: 3339 License: Apache-2.0
  • koa-openapi3-router

    https://.com/vivek-26/koa-openapi3-router

    Koa (v2) Router, based on OpenAPI 3 Doc.
    Stars: 1 License: MIT
  • koa2-oas3

    https://.com/OverSpeedIO/koa2-oas3

    Koa2 OpenAPI 3 request validation middleware.
    Stars: 4
  • kotlin-spring-mvc-template

    https://.com/cdimascio/kotlin-spring-mvc-template

    12-factor compliant Spring MVC Kotlin template. Features automatic request/response validation and interactive API doc
    Stars: 22
  • kui

    https://.com/abersheeran/kui

    An easy-to-use web framework. Supports both WSGI and ASGI modes. Gevent or asyncio, this is the question.
    Stars: 293 License: Apache-2.0
  • kumuluzee-openapi

    https://.com/kumuluz/kumuluzee-openapi

    KumuluzEE OpenAPI extension provides powerful tools to incorporate and visualize the OpenAPI 3 specification to your microservice.
    Stars: 2 License: 
  • larapiauth

    https://.com/dansharisan/larapiauth

    An authentication API boilerplate can be used for starting any new app.
    Stars: 12 License: MIT
  • light-codegen

    https://.com/networknt/light-codegen

    A code generator based on rocker that can be used as an utility or web service
    Stars: 37 License: Apache-2.0
  • light-rest-4j

    https://.com/networknt/light-rest-4j

    A RESTful framework built on top of light-4j with both Swagger 2.0 and OpenAPI 3.0 supports
    Stars: 115 License: Apache-2.0
  • listener-from-oas3-js

    https://.com/chrisdostert/listener-from-oas3-js

    Javascript library which generates a native http server listener from a v3 open api spec
    Stars: 1 License: MIT
  • memar-go

    https://.com/GeniusesGroup/memar-go

    Developing software framework for the GO programming language
    Stars: 44 License: Apache-2.0
  • microcks

    https://.com/microcks/microcks

    Kubernetes native tool for mocking and testing API and micro-services
    Stars: 810 License: Apache-2.0
  • mockoon

    https://.com/mockoon/mockoon

    Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
    Stars: 4850 License: MIT
  • modern-ruby

    https://.com/modern-project/modern-ruby

    An OpenAPI-first web server for Ruby/Rack.
    Stars: 15 License: MIT
  • multi-file-oas-example

    https://.com/funa1g/multi-file-oas-example

    An example of multi file OpenAPI Specification 3.0
    Stars: 3 License: MIT
  • muskrat

    https://.com/muskratjs/muskrat

    :rat: Generate project metadata
    Stars: 3 License: MIT
  • n26-api

    https://.com/Rots/n26-api

    Unofficial N26 Bank API documentation
    Stars: 49 License: MIT
  • namsor-r-sdk2

    https://.com/namsor/namsor-r-sdk2

    NamSor API v2 R SDK - classify personal names accurately by gender, country of origin, or ethnicity.
    Stars: 12
  • oai-ts-core

    https://.com/Apicurio/oai-ts-core

    Core typescript library to read and manipulate OpenAPI specification definitions.
    Stars: 48 License: Apache-2.0
  • oapi-codegen

    https://.com/deepmap/oapi-codegen

    Generate Go client and server boilerplate from OpenAPI 3 specifications
    Stars: 3437 License: Apache-2.0
  • oapi3codegen

    https://.com/koshevy/oapi3codegen

    Moved here โ€” https://.com/koshevy/codegena
    Stars: 7
  • oas

    https://.com/go-courier/oas

    OpenAPI Spec builder in go
    Stars: 15 License: MIT
  • oas-diff

    https://.com/up9inc/oas-diff

    OAS 3.1 Validation and Diff CLI Tool
    Stars: 9
  • oas-generator

    https://.com/oas-tools/oas-generator

    NodeJS RESTful APIs scaffolding based OpenAPI 3.x specs using oas-tools and express.
    Stars: 41 License: Apache-2.0
  • oas-kit

    https://.com/Mermade/oas-kit

    Convert Swagger 2.0 definitions to OpenAPI 3.0 and resolve/validate/lint
    Stars: 719 License: BSD-3-Clause
  • oas-tools

    https://.com/oas-tools/oas-tools

    NodeJS module to manage RESTful APIs defined with OpenAPI 3.0 Specs over express servers.
    Stars: 156 License: Apache-2.0
  • oas3-api-snippet-enricher

    https://.com/cdwv/oas3-api-snippet-enricher

    Enrich your OpenAPI 3.0 JSON with code samples
    Stars: 79 License: MIT
  • oas3-chow-chow

    https://.com/atlassian/oas3-chow-chow

    Request and response validator against OpenAPI Specification 3
    Stars: 39 License: 
  • oazapfts

    https://.com/oazapfts/oazapfts

    Generate TypeScript clients to tap into OpenAPI servers
    Stars: 369
  • odata-openapi

    https://.com/oasis-tcs/odata-openapi

    OASIS OData TC: Tools for producing API descriptions for OData services that adhere to the OpenAPI Specification
    Stars: 158 License: 
  • open-api-renderer

    https://.com/temando/open-api-renderer

    ๐ŸŽฉ A React renderer for OpenAPI v3.
    Stars: 144 License: MIT
  • openAPI

    https://.com/brreg/openAPI

    Reposository holding the API specifications of Brรธnnรธysundregistrene
    Stars: 8
  • open_api_schemas_to_markdown

    https://.com/entrepreneur-interet-general/open_api_schemas_to_markdown

    Generate Markdown documentation from OpenAPI 3 Components Schemas
    Stars: 11 License: MIT
  • openapi

    https://.com/sphinx-contrib/openapi

    OpenAPI (fka Swagger) spec renderer for Sphinx.
    Stars: 96 License: BSD-2-Clause
  • openapi

    https://.com/wzshiming/openapi

    OpenAPI 3 Specification for golang
    Stars: 18 License: MIT
  • openapi

    https://.com/sv-tools/openapi

    OpenAPI v3.1 Spec implementation in Go with generics
    Stars: 24 License: MIT
  • openapi-auto-test

    https://.com/dtzar/openapi-auto-test

    Automatically reads an OpenAPI 3.0 defintion and generates a Postman collection to be used with newman for automated API tests.
    Stars: 30 License: MIT
  • openapi-boilerplate

    https://.com/dgarcia360/openapi-boilerplate

    ๐Ÿ“˜ Multi-file boilerplate for Open API Specification
    Stars: 284 License: 
  • openapi-codegen

    https://.com/Mermade/openapi-codegen

    OpenAPI 3.0 CodeGen plus Node.js minus the Java and emojis
    Stars: 295 License: Apache-2.0
  • openapi-core

    https://.com/python-openapi/openapi-core

    OpenAPI core
    Stars: 205 License: BSD-3-Clause
  • openapi-diff

    https://.com/OpenAPITools/openapi-diff

    Utility for comparing two OpenAPI specifications.
    Stars: 567 License: Apache-2.0
  • openapi-diff

    https://bitbucket.org/atlassian/openapi-diff/src/master/

    A CLI tool to identify differences between Swagger/OpenAPI specs.
    License: Apache-2.0
  • openapi-directory

    https://.com/APIs-guru/openapi-directory

    ๐ŸŒ Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
    Stars: 4058 License: CC0-1.0
  • openapi-directory-js

    https://.com/httptoolkit/openapi-directory-js

    Building & bundling https://.com/APIs-guru/openapi-directory for easy use from JS
    Stars: 16 License: MIT
  • openapi-eller

    https://.com/technocreatives/openapi-eller

    Generate OpenAPI v3 clients and servers from the command line
    Stars: 19 License: ISC
  • openapi-ext

    https://.com/microprofile-extensions/openapi-ext

    Some extensions for MicroProfile OpenAPI
    Stars: 20 License: Apache-2.0
  • openapi-extract

    https://.com/Mermade/openapi-extract

    Extract single paths/operations from OpenAPI definitions
    Stars: 33 License: BSD-3-Clause
  • openapi-filter

    https://.com/Mermade/openapi-filter

    Filter internal paths, operations, parameters, schemas etc from OpenAPI/Swagger/AsyncAPI definitions
    Stars: 162 License: BSD-3-Clause
  • openapi-first

    https://www.npmjs.com/package/@smartrecruiters/openapi-first

    Start your node REST app with designing API first!
    Stars: 36 License: MIT
  • openapi-generator

    https://.com/OpenAPITools/openapi-generator

    OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
    Stars: 16050 License: Apache-2.0
  • openapi-generator-cli

    https://.com/OpenAPITools/openapi-generator-cli

    A node package wrapper for https://.com/OpenAPITools/openapi-generator
    Stars: 1529 License: Apache-2.0
  • openapi-gui

    https://mermade..io/openapi-gui

    GUI / visual editor for creating and editing OpenAPI / Swagger definitions
    Stars: 1434 License: MIT
  • openapi-lint-vscode

    https://.com/Mermade/openapi-lint-vscode

    OpenAPI 2.0/3.0.x intellisense, validator, linter, converter and resolver extension for Visual Studio Code
    Stars: 51 License: BSD-3-Clause
  • openapi-mock

    https://.com/muonsoft/openapi-mock

    OpenAPI mock server with random data generation
    Stars: 375 License: MIT
  • openapi-mock-eller

    https://.com/technocreatives/openapi-mock-eller

    From OpenAPI v3 spec to running mock server in one command
    Stars: 8 License: ISC
  • openapi-mockk

    https://.com/unjello/openapi-mockk

    DEPRECATED. Generates data based on OpenAPI 3.0 specification
    Stars: 1 License: CC0-1.0
  • openapi-parser

    https://.com/aress31/openapi-parser

    Parse OpenAPI documents into Burp Suite for automating OpenAPI-based APIs security assessments (approved by PortSwigger for inclusion in their official BApp Store).
    Stars: 197 License: Apache-2.0
  • openapi-parser

    https://.com/networknt/openapi-parser

    A light-weight, fast OpenAPI 3.0 parser and validator with minimum third party dependencies
    Stars: 6 License: EPL-1.0
  • openapi-parser

    https://.com/unjello/openapi-parser

    DEPRECATED. Parser and validator for OpenAPI 3.0
    Stars: 0 License: CC0-1.0
  • openapi-petstore

    https://.com/OpenAPITools/openapi-petstore

    The pet store sample
    Stars: 41 License: Apache-2.0
  • openapi-php

    https://.com/erasys/openapi-php

    ๐Ÿ“šSwagger / Open API 3.0 builder and validation library for PHP that helps you write valid specs.
    Stars: 17 License: MIT
  • openapi-preprocessor

    https://.com/dolmen-go/openapi-preprocessor

    An authoring tool for OpenAPI specifications
    Stars: 31 License: Apache-2.0
  • openapi-psr7-validator

    https://.com/lezhnev74/openapi-psr7-validator

    It validates PSR-7 messages (HTTP request/response) against OpenAPI specifications
    Stars: 167 License: MIT
  • openapi-sampler

    https://.com/Redocly/openapi-sampler

    :capital_abcd: Tool for generation samples based on OpenAPI(fka Swagger) payload/response schema
    Stars: 135 License: MIT
  • openapi-schemas-validator

    https://.com/smartrecruiters/openapi-schemas-validator

    Schema validators for api documentation in OpenAPI Specification 3.x format.
    Stars: 1 License: MIT
  • openapi-snippet

    https://.com/ErikWittern/openapi-snippet

    Generates code snippets for given Swagger / Open API documents
    Stars: 124 License: MIT
  • openapi-spec-validator

    https://.com/python-openapi/openapi-spec-validator

    OpenAPI Spec validator
    Stars: 250 License: Apache-2.0
  • openapi-spring-webflux-validator

    https://.com/cdimascio/openapi-spring-webflux-validator

    ๐ŸŒฑ A friendly kotlin library to validate API endpoints using an OpenApi 3.0 and Swagger 2.0 specification
    Stars: 91 License: 
  • openapi-starter

    https://.com/Redocly/openapi-starter

    OpenAPI starter repository
    Stars: 86 License: MIT
  • openapi-to-postman

    https://.com/postmanlabs/openapi-to-postman

    Plugin for converting OpenAPI 3.0 specs to the Postman Collection (v2) format
    Stars: 708 License: Apache-2.0
  • openapi-typescript

    https://.com/drwpow/openapi-typescript

    Generate TypeScript types from OpenAPI 3 specs
    Stars: 2850 License: MIT
  • openapi-typescript-code-generator

    https://.com/Himenon/openapi-typescript-code-generator

    TypeScript code generator via OpenAPI scheme.
    Stars: 199 License: MIT
  • openapi-ui

    https://.com/contentjet/openapi-ui

    React based OpenAPI 3.0+ documentation generator
    Stars: 32
  • openapi-viewer

    https://.com/data-fair/openapi-viewer

    Browse and test a REST API described with the OpenAPI 3.0 Specification
    Stars: 90 License: AGPL-3.0
  • openapi-webconverter

    https://.com/Mermade/openapi-webconverter

    Mermade Swagger 2.0 to OpenAPI 3.0.0 converter front-end
    Stars: 14 License: BSD-3-Clause
  • openapi.tools

    https://.com/apisyouwonthate/openapi.tools

    A collection of Editors, Linters, Parsers, Code Generators, Documentation, Testing
    Stars: 719 License: MIT
  • openapi2postman

    https://.com/apiaddicts/openapi2postman

    Project open source financed by Madrid Digital (Spain) and CloudAPPi S.L and promoted by APIAddicts. With this project, you can generate all tests automatically using a Swagger document, and you can add it to CI using newman.
    Stars: 9 License: LGPL-3.0
  • openapi2soapui

    https://.com/apiaddicts/openapi2soapui

    API to generate a SoapUI project from an OpenAPI Specification (fka Swagger Specification) Given an OpenAPI Specification, either v2 or v3, a SoapUI project is generated with the requests for each resource operation and a test suite. The response is the content of the SoapUI project in XML format to save as file and import into the SoapUI application.
    Stars: 6 License: LGPL-3.0
  • openapi3-examples

    https://.com/Mermade/openapi3-examples

    Passing and failing test cases for OpenAPI 3.x validators
    Stars: 26 License: Apache-2.0
  • openapi3-generator

    https://.com/openapi-contrib/openapi3-generator

    Use your API OpenAPI 3 definition to generate code, documentation, and literally anything you need.
    Stars: 88 License: Apache-2.0
  • openapi3-rust

    https://.com/adwhit/openapi3-rust

    Rust serialization library for OpenAPIv3
    Stars: 13 License: MIT
  • openapi3-ts

    https://.com/metadevpro/openapi3-ts

    TS Model & utils for creating and exposing OpenAPI 3.x contracts.
    Stars: 353 License: MIT
  • openapi3-typescript-codegen

    https://.com/foxel/openapi3-typescript-codegen

    typescript codegen for OpenAPI 3
    Stars: 11
  • openapi3_parser

    https://.com/kevindew/openapi3_parser

    Open API 3 Parser/Validator for Ruby
    Stars: 80 License: MIT
  • openapi4j

    https://.com/openapi4j/openapi4j

    OpenAPI 3 parser, JSON schema and request validator.
    Stars: 96 License: Apache-2.0
  • openapi_first

    https://.com/ahx/openapi_first

    openapi_first is a Ruby gem for request / response validation and contract-testing against an OpenAPI API description. It makes APIFirst easy and reliable.
    Stars: 133 License: MIT
  • openapify

    https://.com/Fatal1ty/openapify

    Framework agnostic OpenAPI Specification generation for code lovers
    Stars: 6 License: Apache-2.0
  • openapimux

    https://.com/mnf-group/openapimux

    Open API router in go
    Stars: 21 License: MIT
  • optic

    https://.com/opticdev/optic

    Optic makes it easy to document your APIs, prevent breaking changes, and follow an API style-guide
    Stars: 1100 License: MIT
  • payload-oapi

    https://.com/Teyras/payload-oapi

    A Payload CMS plugin for OpenAPI (3.0, 3.1) specification generation
    Stars: 5 License: MIT
  • php-openapi

    https://.com/cebe/php-openapi

    Read and write OpenAPI yaml/json files and make the content accessible in PHP objects.
    Stars: 414 License: MIT
  • php-openapi-faker

    https://.com/canvural/php-openapi-faker

    Library to generate fake data for OpenAPI request/response/schemas
    Stars: 90 License: MIT
  • play-api-refiner

    https://.com/dgouyette/play-api-refiner

    Stars: 16
  • prance

    https://.com/RonnyPfannschmidt/prance

    Resolving Swagger/OpenAPI 2.0 and 3.0 Parser
    Stars: 198 License: 
  • prism

    http://stoplight.io/platform/prism/

    Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
    Stars: 3490 License: Apache-2.0
  • psx-api

    http://phpsx.org

    TypeAPI parser and SDK code generator
    Stars: 36 License: Apache-2.0
  • py-openapi-schema-to-json-schema

    https://.com/pglass/py-openapi-schema-to-json-schema

    Python port of https://.com/mikunn/openapi-schema-to-json-schema
    Stars: 12 License: MIT
  • py-openapilib

    https://.com/joar/py-openapilib

    Python 3.6 OpenAPI 3 Object Model - built with attrs
    Stars: 2 License: BSD-2-Clause
  • pyramid-oas3

    https://.com/kazuki/pyramid-oas3

    Stars: 2 License: MIT
  • pyramid_openapi3

    https://.com/Pylons/pyramid_openapi3

    Pyramid addon for OpenAPI3 validation of requests and responses.
    Stars: 78 License: MIT
  • quenya

    https://.com/tyrchen/quenya

    Quenya is a framework to build high-quality REST API applications based on extended OpenAPI spec
    Stars: 138 License: MIT
  • rapido-web

    https://rapidodesigner.com/

    An API design tool that facilitates the sketching phase of design.
    Stars: 5
  • redoc

    https://.com/Redocly/redoc

    ๐Ÿ“˜ OpenAPI/Swagger-generated API Reference Documentation
    Stars: 19950 License: MIT
  • redocly-cli

    https://.com/Redocly/redocly-cli

    โš’๏ธ Redocly CLI (fka OpenAPI CLI) tools with extensive validation rules to lint your API and bundle your API.
    Stars: 551 License: MIT
  • restful-react

    https://.com/contiamo/restful-react

    A consistent, declarative way of interacting with RESTful backends, featuring code-generation from Swagger and OpenAPI specs ๐Ÿ”ฅ
    Stars: 1882 License: MIT
  • restish

    https://.com/danielgtaylor/restish

    Restish is a CLI for interacting with REST-ish HTTP APIs with some nice features built-in
    Stars: 464 License: MIT
  • rolodex

    https://.com/Frameio/rolodex

    ๐Ÿ“‡API Documentation Generator for Phoenix
    Stars: 36 License: MIT
  • rororo

    https://.com/playpauseandstop/rororo

    Implement aiohttp.web OpenAPI 3 server applications with schema first approach.
    Stars: 103 License: BSD-3-Clause
  • routing-controllers-openapi

    https://.com/epiphone/routing-controllers-openapi

    Runtime OpenAPI v3 schema generation for routing-controllers.
    Stars: 282 License: MIT
  • safrs

    https://.com/thomaxxl/safrs

    SqlAlchemy Flask-Restful Swagger Json:API OpenAPI
    Stars: 370 License: GPL-3.0
  • sails-hook-swagger-generator

    https://.com/theoomoregbee/sails-hook-swagger-generator

    A tool to help generate Swagger specification documentation based on OAS 3.0 for Sails APIs
    Stars: 71 License: MIT
  • schema-oas

    https://.com/tandfgroup/schema-oas

    OpenAPI Specifications for Schema.org
    Stars: 8 License: Apache-2.0
  • schemathesis

    https://.com/schemathesis/schemathesis

    Guarantee flawless API functionality with thorough, high-quality test scenarios generated from your API specification.
    Stars: 1669 License: MIT
  • serafin

    https://.com/serafin-labs/serafin

    An API framework in Typescript/Node.js with OpenApi 3 & GraphQL
    Stars: 15 License: MIT
  • simple-flask-project

    https://.com/riddhi89/simple-flask-project

    Generate OpenAPI spec from Flask routes
    Stars: 0
  • sleeplessinslc

    https://.com/sanjayvacharya/sleeplessinslc

    Demo code from
    Stars: 52
  • smogger

    https://.com/m3-moretv/smogger

    Simple mock server for Swagger (Open API v3) specification
    Stars: 9
  • soas

    https://.com/koumoul-dev/soas

    Semantic Open API Specification library
    Stars: 3 License: MIT
  • sonar-openapi

    https://.com/apiaddicts/sonar-openapi

    doSonarAPI: static analyzer for OpenAPI contracts
    Stars: 2 License: LGPL-3.0
  • speccy

    https://.com/wework/speccy

    Well Spectually ๐Ÿค“ Enforce quality rules on your OpenAPI 3.0.x specifications.
    Stars: 800 License: MIT
  • spectral

    https://.com/stoplightio/spectral

    A flexible JSON/YAML linter for creating automated style guides, with baked in support for OpenAPI v3.1, v3.0, and v2.0 as well as AsyncAPI v2.x.
    Stars: 1862 License: Apache-2.0
  • spectral-owasp-ruleset

    https://.com/stoplightio/spectral-owasp-ruleset

    Improve the security of your API by detecting common vulnerabilities as defined by OWASP and enforced with Spectral.
    Stars: 29
  • spot

    https://.com/airtasker/spot

    Spot is a concise, developer-friendly way to describe your API contract.
    Stars: 562 License: 
  • springdoc-openapi

    https://.com/springdoc/springdoc-openapi

    Library for OpenAPI 3 with spring-boot
    Stars: 2502 License: Apache-2.0
  • sticker

    https://.com/rafaelcaricio/sticker

    Sticker is a powerful yet boilerplate-free alternative to writing your web API.
    Stars: 26 License: Apache-2.0
  • studio

    https://.com/stoplightio/studio

    The modern editor for API Design and Technical Writing.
    Stars: 718 License: 
  • swagger-codegen

    https://.com/swagger-api/swagger-codegen

    swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.
    Stars: 15529 License: Apache-2.0
  • swagger-core

    https://.com/swagger-api/swagger-core

    Examples and server integrations for generating the Swagger API Specification, which enables easy access to your REST API
    Stars: 7172 License: Apache-2.0
  • swagger-editor

    https://.com/swagger-api/swagger-editor

    Swagger Editor
    Stars: 8120 License: Apache-2.0
  • swagger-js

    https://.com/swagger-api/swagger-js

    Javascript library to connect to swagger-enabled APIs via browser or nodejs
    Stars: 2485 License: Apache-2.0
  • swagger-mock-validator

    https://bitbucket.org/atlassian/swagger-mock-validator/src/master/

    A CLI tool to validate mocks against swagger/OpenApi specs.
    License: Apache-2.0
  • swagger-node-codegen

    https://.com/fmvilas/swagger-node-codegen

    An OpenAPI 3.x/Swagger 2 code generator for Node.js
    Stars: 199 License: Apache-2.0
  • swagger-request-validator

    https://bitbucket.org/atlassian/swagger-request-validator/src/master/

    A Java library for validating request/responses against a OpenAPI / Swagger specification. Includes support for Swagger v2 and OpenAPI v3 specifications and adapters for common mock and testing libraries.
    License: Apache-2.0
  • swagger-to-mock

    https://.com/yayoc/swagger-to-mock

    Mock data generator CLI for Swagger3 (OpenAPI 3)
    Stars: 52
  • swaggerplusplus

    https://.com/Mermade/swaggerplusplus

    A proposal for transitioning between Swagger 2.0 and OpenAPI 3.0.x
    Stars: 6 License: Unlicense
  • swaggerui-webpack-boilerplate

    https://.com/SensibleWood/swaggerui-webpack-boilerplate

    Boilerplate for spinning up local Swagger UI server, orchestrated through Webpack
    Stars: 1
  • tcases

    https://.com/Cornutum/tcases

    A model-based test case generator
    Stars: 226 License: MIT
  • tus-server-implementation

    https://.com/ckaratzas/tus-server-implementation

    A java implementation of https://tus.io/protocols/resumable-upload.html protocol with vertx-web.
    Stars: 10 License: MIT
  • typeswagger

    https://.com/acme-software/typeswagger

    A Swagger / OpenApi Specification DSL for Scala
    Stars: 1 License: MIT
  • unifysell-sdk-php

    https://.com/unifysell/unifysell-sdk-php

    SDK with OAuth2 for the unifysell API which allows you to painless integrate many eCommerce channels :clock3:
    Stars: 2 License: MIT
  • uvicorn-gunicorn-fastapi-docker

    https://.com/tiangolo/uvicorn-gunicorn-fastapi-docker

    Docker image with Uvicorn managed by Gunicorn for high-performance FastAPI web applications in Python with performance auto-tuning. Optionally with Alpine Linux.
    Stars: 2181 License: MIT
  • validator-badge

    https://.com/swagger-api/validator-badge

    Validate your Swagger JSON/YAML today!
    Stars: 182 License: Apache-2.0
  • vertx-auto-swagger

    https://.com/anupsaund/vertx-auto-swagger

    Java Micro Service API Generation
    Stars: 33 License: MIT
  • vertx-oas

    https://.com/outofcoffee/vertx-oas

    Generates a Swagger/OpenAPI specification from a Vert.x Web Router.
    Stars: 30
  • vertx-openapi-spec-generator

    https://.com/ckaratzas/vertx-openapi-spec-generator

    Runtime Generation of OpenApi 3 specification from vertx routes.
    Stars: 9 License: MIT
  • vs-openapi-designer

    https://.com/philosowaffle/vs-openapi-designer

    OpenApi Designer Extension for VS Code
    Stars: 15 License: GPL-3.0
  • vscode-openapi

    https://marketplace.visualstudio.com/items?itemName=42Crunch.vscode-openapi

    VisualStudio Code OpenAPI tools
    Stars: 350 License: AGPL-3.0
  • vue-admin

    https://.com/mrTimofey/vue-admin

    Vue.js based administrative interface
    Stars: 29 License: MIT
  • vue-openapi

    https://.com/koumoul-dev/vue-openapi

    OpenAPI viewer component for VueJS
    Stars: 84 License: MIT
  • widdershins

    https://.com/Mermade/widdershins

    OpenAPI / Swagger, AsyncAPI & Semoasa definitions to (re)Slate compatible markdown
    Stars: 1275 License: MIT
  • yii2-app-api

    https://.com/cebe/yii2-app-api

    OpenAPI Spec to API in 3, 2, 1... done!
    Stars: 100 License: MIT
  • yii2-openapi

    https://.com/cebe/yii2-openapi

    REST API application generator for Yii2, openapi 3.0 YAML -> Yii2
    Stars: 123 License: MIT