| Name | Description | Home | Repo | 3.1? | 3.0? | 2.0? | Stars | Properties |
|---|---|---|---|---|---|---|---|---|
| APIMatic Transformer | Transform API Descriptions to and from RAML, API Blueprint, OAI v2/v3, WSDL, etc. | Link | No | Yes | Yes | Yes | N/A | |
| avantation | Build OpenAPI3.0 specification from HAR. | Link | Link | No | Yes | No | 91 | |
| OAS RAML Converter | (DEPRECATED) Converts between OAS and RAML API specifications | Link | Link | No | Yes | Yes | 74 | |
| OData OpenAPI | OASIS OData TC: Tools for producing API descriptions for OData services that adhere to the OpenAPI Specification | Link | Link | Yes | Yes | Yes | 212 | |
| OpenAPI Filter | Filter internal paths, operations, parameters, schemas etc from OpenAPI/Swagger/AsyncAPI definitions | No | Link | Yes | Yes | Yes | 166 | |
| OData.OpenAPI | OData to Open API | No | Link | No | Yes | No | 7 | |
| @hey-api/openapi-ts | 🚀 The OpenAPI to TypeScript codegen. Generate clients, SDKs, validators, and more. Support: @mrlubos | Link | Link | Yes | Yes | Yes | 3363 | |
| portman | Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽🚀 | Link | Link | No | Yes | No | 667 | |
| Step CI | Automated API Testing and Quality Assurance | Link | Link | No | Yes | No | 1809 | |
| go-swagger | Swagger 2.0 implementation for go | Link | Link | No | No | Yes | 9853 | |
| docs | Automatically generate RESTful API documentation for GO projects - aligned with Open API Specification standard | Link | Link | Yes | Yes | No | 48 | |
| oas | Comprehensive tooling for working with OpenAPI definitions. | Link | Link | Yes | Yes | Yes | 358 | |
| api | 🚀 Automatic SDK generation from an OpenAPI definition | Link | Link | Yes | Yes | Yes | 663 | |
| laravel-openapi | Generate OpenAPI specification for Laravel Applications | No | Link | No | Yes | No | 448 | |
| OpenAPI Schema to JSON Schema | Due to the OpenAPI v3.0 and JSON Schema discrepancy, you can use this JS library to convert OpenAPI Schema objects to proper JSON Schema. | Link | Link | No | Yes | No | 266 | |
| JSON Schema to OpenAPI Schema | Due to the OpenAPI v3.0 and JSON Schema discrepancy, you can use this JS library to convert JSON Schema objects to OpenAPI Schema. | Link | Link | No | Yes | No | 123 | |
| openapi-to-postman | Plugin for converting OpenAPI 3.0 specs to the Postman Collection (v2) format | No | Link | Yes | Yes | Yes | 1017 | |
| openapi-format | Format an OpenAPI document by ordering, formatting and filtering fields. | Link | Link | Yes | Yes | No | 142 | |
| openapi-python-client | Generate modern Python clients from OpenAPI | Link | Link | Yes | Yes | No | 1725 | |
| allof-merge | Simplify your JsonSchema by combining allOf safely. | No | Link | Yes | Yes | No | 21 | |
| api-ref-bundler | Bundle all external $ref in Json based API document into single document | No | Link | Yes | Yes | Yes | 26 | |
| typeconv | Convert between JSON Schema, TypeScript, GraphQL, Open API and SureType | Link | Link | No | Yes | No | 446 | |
| openapi-merge | Merge multiple OpenAPI 3.0 (Swagger) files together via a library or CLI tool. | Link | Link | No | Yes | No | 159 | |
| OpenAPI TypeScript | Generate TypeScript types from OpenAPI 3 specs | Link | Link | Yes | Yes | Yes | 7520 | |
| gnostic | A compiler for APIs described by the OpenAPI Specification with plugins for code generation and other API support tasks. | No | Link | No | Yes | No | 2230 | |
| oas-kit | Convert Swagger 2.0 definitions to OpenAPI 3.0 and resolve/validate/lint | No | Link | No | Yes | No | 735 | |
| openapi-codegen | OpenAPI 3.0 CodeGen plus Node.js minus the Java and emojis | No | Link | No | Yes | No | 296 | |
| awesome-jsonschema | A curated list of awesome JSON Schema resources, tutorials, tools, and more | No | Link | No | Yes | No | 152 | |
| openapi | OpenAPI (fka Swagger) spec renderer for Sphinx. | No | Link | No | Yes | No | 121 | |
| drf-spectacular-sidecar | Serve self-contained distribution builds of Swagger UI and Redoc with Django. | No | Link | No | Yes | No | 41 | |
| openapi | OpenAPI specification for the Outline API | No | Link | No | Yes | No | 25 | |
| openapi-webconverter | Mermade Swagger 2.0 to OpenAPI 3.0.0 converter front-end | No | Link | No | Yes | No | 15 | |
| py-openapi-schema-to-json-schema | Python port of https://github.com/mikunn/openapi-schema-to-json-schema | No | Link | No | Yes | No | 14 | |
| protoc-gen-openapi | protoc-gen-openapi is a plugin for the Google protocol buffer compiler to generate openAPI V3 spec for any given input protobuf. | No | Link | No | Yes | No | 6 | |
| ouraring | Go client + OpenAPI v3 spec for Oura-Ring | No | Link | No | Yes | No | 6 | |
| oasis | 🔀🆗☑️ Automated API testing from Swagger/Open API specifications. | No | Link | No | Yes | No | 2 | |
| simple-flask-project | Generate OpenAPI spec from Flask routes | No | Link | No | Yes | No | 2 | |
| petstore-api | This sample implements a Linx REST API based on the Swagger 'Petstore' OpenAPI definition and is hosted on a Linx Cloud Server | No | Link | No | Yes | No | 2 | |
| listener-from-oas3-js | Javascript library which generates a native http server listener from a v3 open api spec | No | Link | No | Yes | No | 1 | |
| postman-coverage | derive postman collection coverage against openapi schema | No | Link | No | Yes | No | 1 | |
| task-management | Task Management API | No | Link | No | Yes | No | N/A | |
| LucyBot api-spec-converter | Convert API descriptions between popular formats such as OpenAPI(fka Swagger), RAML, API Blueprint, WADL, etc. | Link | Link | No | Yes | Yes | 1159 | |
| oas-normalize | Tooling for converting, validating, and parsing OpenAPI, Swagger, and Postman API definitions. | No | Link | Yes | Yes | Yes | 37 | |
| openapi3-request-finder | Not available | No | Link | No | Yes | No | N/A | |
| Apimatic Transformer | Transform API Descriptions to and from RAML, API Blueprint, OAI v2/v3, WSDL, etc. | Link | No | Yes | Yes | Yes | N/A | |
| Karate-IDE | The Best OpenSource IDE for KarateDSL. | Link | Link | No | Yes | No | 12 | |
| pyswagger | An OpenAPI (fka Swagger) client & converter in python, which is type-safe, dynamic, spec-compliant. | No | Link | No | No | Yes | 393 | |
| odata2openapi | OData to OpenAPI Converter | No | Link | No | No | Yes | 37 |
| Repository Owner | |
| Stars | N/A |
| Watchers | |
| Forks | |
| Created | |
| Last Updated | |
| Archived | |
| Language | SaaS |
| Repository Owner | anbuksv |
| Stars | 91 |
| Watchers | 2 |
| Forks | 16 |
| Created | 2018-12-17T03:17:54Z |
| Last Updated | 2025-10-06T09:26:18Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | mulesoft |
| Stars | 74 |
| Watchers | 238 |
| Forks | 51 |
| Created | 2016-08-05T09:49:24Z |
| Last Updated | 2025-10-06T18:32:20Z |
| Archived | Yes |
| Language | JavaScript |
| Repository Owner | oasis-tcs |
| Stars | 212 |
| Watchers | 18 |
| Forks | 85 |
| Created | 2016-11-17T21:11:22Z |
| Last Updated | 2025-10-20T07:05:09Z |
| Archived | No |
| Language | XSLT |
| Repository Owner | Mermade |
| Stars | 166 |
| Watchers | 3 |
| Forks | 34 |
| Created | 2017-08-02T13:42:57Z |
| Last Updated | 2025-08-27T14:25:58Z |
| Archived | No |
| Language | JavaScript |
| Repository Owner | xuzhg |
| Stars | 7 |
| Watchers | 3 |
| Forks | 5 |
| Created | 2017-09-28T22:56:53Z |
| Last Updated | 2023-05-22T09:10:47Z |
| Archived | No |
| Language | C# |
| Repository Owner | hey-api |
| Stars | 3363 |
| Watchers | 9 |
| Forks | 252 |
| Created | 2024-01-10T15:19:25Z |
| Last Updated | 2025-10-25T02:18:49Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | apideck-libraries |
| Stars | 667 |
| Watchers | 7 |
| Forks | 60 |
| Created | 2021-05-05T10:42:29Z |
| Last Updated | 2025-10-22T06:30:12Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | stepci |
| Stars | 1809 |
| Watchers | 12 |
| Forks | 90 |
| Created | 2022-09-16T14:48:21Z |
| Last Updated | 2025-10-22T02:26:36Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | go-swagger |
| Stars | 9853 |
| Watchers | 112 |
| Forks | 1292 |
| Created | 2014-11-16T20:13:15Z |
| Last Updated | 2025-10-24T16:34:25Z |
| Archived | No |
| Language | Go |
| Repository Owner | go-oas |
| Stars | 48 |
| Watchers | 1 |
| Forks | 6 |
| Created | 2021-01-28T18:51:47Z |
| Last Updated | 2025-09-27T15:33:34Z |
| Archived | No |
| Language | Go |
| Repository Owner | readmeio |
| Stars | 358 |
| Watchers | 19 |
| Forks | 35 |
| Created | 2017-03-07T02:46:31Z |
| Last Updated | 2025-10-17T13:17:00Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | readmeio |
| Stars | 663 |
| Watchers | 19 |
| Forks | 29 |
| Created | 2017-02-06T22:31:07Z |
| Last Updated | 2025-10-21T21:13:19Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | vyuldashev |
| Stars | 448 |
| Watchers | 12 |
| Forks | 109 |
| Created | 2019-04-21T10:45:45Z |
| Last Updated | 2025-10-20T03:32:27Z |
| Archived | No |
| Language | PHP |
| Repository Owner | openapi-contrib |
| Stars | 266 |
| Watchers | 4 |
| Forks | 21 |
| Created | 2020-01-17T21:37:32Z |
| Last Updated | 2025-10-24T23:34:29Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | openapi-contrib |
| Stars | 123 |
| Watchers | 4 |
| Forks | 18 |
| Created | 2019-10-04T15:44:03Z |
| Last Updated | 2025-09-16T20:59:30Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | postmanlabs |
| Stars | 1017 |
| Watchers | 20 |
| Forks | 227 |
| Created | 2018-12-12T10:13:46Z |
| Last Updated | 2025-10-24T12:51:29Z |
| Archived | No |
| Language | JavaScript |
| Repository Owner | thim81 |
| Stars | 142 |
| Watchers | 3 |
| Forks | 20 |
| Created | 2021-03-06T11:31:52Z |
| Last Updated | 2025-10-18T07:04:30Z |
| Archived | No |
| Language | JavaScript |
| Repository Owner | openapi-generators |
| Stars | 1725 |
| Watchers | 14 |
| Forks | 257 |
| Created | 2020-02-15T19:33:46Z |
| Last Updated | 2025-10-23T14:30:39Z |
| Archived | No |
| Language | Python |
| Repository Owner | udamir |
| Stars | 21 |
| Watchers | 2 |
| Forks | 8 |
| Created | 2023-06-17T10:45:41Z |
| Last Updated | 2025-10-06T09:41:44Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | udamir |
| Stars | 26 |
| Watchers | 1 |
| Forks | 4 |
| Created | 2022-06-25T21:21:05Z |
| Last Updated | 2025-10-13T15:55:45Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | grantila |
| Stars | 446 |
| Watchers | 2 |
| Forks | 9 |
| Created | 2020-09-06T09:40:04Z |
| Last Updated | 2025-10-01T00:41:11Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | robertmassaioli |
| Stars | 159 |
| Watchers | 3 |
| Forks | 30 |
| Created | 2021-05-23T02:23:17Z |
| Last Updated | 2025-10-14T13:50:54Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | openapi-ts |
| Stars | 7520 |
| Watchers | 23 |
| Forks | 591 |
| Created | 2018-12-13T20:28:01Z |
| Last Updated | 2025-10-25T02:45:31Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | |
| Stars | 2230 |
| Watchers | 35 |
| Forks | 271 |
| Created | 2016-11-15T19:21:53Z |
| Last Updated | 2025-10-22T04:22:58Z |
| Archived | No |
| Language | Go |
| Repository Owner | Mermade |
| Stars | 735 |
| Watchers | 13 |
| Forks | 120 |
| Created | 2016-10-20T13:17:42Z |
| Last Updated | 2025-10-17T03:53:57Z |
| Archived | No |
| Language | JavaScript |
| Repository Owner | Mermade |
| Stars | 296 |
| Watchers | 10 |
| Forks | 47 |
| Created | 2017-11-14T14:02:19Z |
| Last Updated | 2025-10-16T03:53:20Z |
| Archived | No |
| Language | JavaScript |
| Repository Owner | sourcemeta |
| Stars | 152 |
| Watchers | 10 |
| Forks | 2 |
| Created | 2021-09-09T11:39:06Z |
| Last Updated | 2025-10-10T08:45:03Z |
| Archived | No |
| Language | Handlebars |
| Repository Owner | sphinx-contrib |
| Stars | 121 |
| Watchers | 9 |
| Forks | 87 |
| Created | 2016-09-23T06:28:32Z |
| Last Updated | 2025-10-16T11:11:11Z |
| Archived | No |
| Language | Python |
| Repository Owner | tfranzel |
| Stars | 41 |
| Watchers | 1 |
| Forks | 5 |
| Created | 2021-09-24T22:17:14Z |
| Last Updated | 2025-10-24T01:19:49Z |
| Archived | No |
| Language | Python |
| Repository Owner | outline |
| Stars | 25 |
| Watchers | 3 |
| Forks | 12 |
| Created | 2020-06-15T03:58:23Z |
| Last Updated | 2025-10-19T17:45:40Z |
| Archived | No |
| Language | JavaScript |
| Repository Owner | Mermade |
| Stars | 15 |
| Watchers | 1 |
| Forks | 9 |
| Created | 2017-03-05T18:33:45Z |
| Last Updated | 2025-02-12T06:50:03Z |
| Archived | No |
| Language | JavaScript |
| Repository Owner | pglass |
| Stars | 14 |
| Watchers | 2 |
| Forks | 2 |
| Created | 2018-06-23T03:46:02Z |
| Last Updated | 2025-07-01T12:59:50Z |
| Archived | No |
| Language | Python |
| Repository Owner | zchee |
| Stars | 6 |
| Watchers | 1 |
| Forks | 3 |
| Created | 2019-09-07T17:43:22Z |
| Last Updated | 2023-04-17T23:58:47Z |
| Archived | No |
| Language | Go |
| Repository Owner | jordan-chalupka |
| Stars | 6 |
| Watchers | 1 |
| Forks | 0 |
| Created | 2021-12-18T21:20:08Z |
| Last Updated | 2024-05-23T16:59:30Z |
| Archived | No |
| Language | Go |
| Repository Owner | x1n13y84issmd42 |
| Stars | 2 |
| Watchers | 1 |
| Forks | 1 |
| Created | 2019-07-28T07:20:06Z |
| Last Updated | 2023-08-08T12:48:41Z |
| Archived | No |
| Language | Go |
| Repository Owner | jshahriddhi |
| Stars | 2 |
| Watchers | 0 |
| Forks | 0 |
| Created | 2018-06-25T00:08:10Z |
| Last Updated | 2025-10-06T09:24:51Z |
| Archived | No |
| Language | Python |
| Repository Owner | linx-software |
| Stars | 2 |
| Watchers | 2 |
| Forks | 0 |
| Created | 2021-07-26T06:00:00Z |
| Last Updated | 2024-01-30T06:07:22Z |
| Archived | No |
| Language |
| Repository Owner | chrisdostert |
| Stars | 1 |
| Watchers | 0 |
| Forks | 0 |
| Created | 2018-07-08T17:56:57Z |
| Last Updated | 2023-01-28T09:32:25Z |
| Archived | Yes |
| Language | JavaScript |
| Repository Owner | abhinaba-ghosh |
| Stars | 1 |
| Watchers | 1 |
| Forks | 0 |
| Created | 2021-06-23T11:45:36Z |
| Last Updated | 2022-09-05T10:42:44Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | shaswatsaxena |
| Stars | N/A |
| Watchers | 0 |
| Forks | 0 |
| Created | 2020-05-26T05:32:20Z |
| Last Updated | 2021-04-10T14:14:21Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | LucyBot-Inc |
| Stars | 1159 |
| Watchers | 22 |
| Forks | 190 |
| Created | 2015-05-05T18:30:05Z |
| Last Updated | 2025-09-28T01:02:00Z |
| Archived | No |
| Language | JavaScript |
| Repository Owner | readmeio |
| Stars | 37 |
| Watchers | 16 |
| Forks | 7 |
| Created | 2018-05-25T00:48:24Z |
| Last Updated | 2025-07-18T14:03:24Z |
| Archived | Yes |
| Language | TypeScript |
| Repository Owner | MarcBru107 |
| Stars | N/A |
| Watchers | 1 |
| Forks | 0 |
| Created | 2020-05-02T14:10:17Z |
| Last Updated | 2020-05-04T21:23:02Z |
| Archived | No |
| Language | Java |
| Repository Owner | |
| Stars | N/A |
| Watchers | |
| Forks | |
| Created | |
| Last Updated | |
| Archived | |
| Language | SaaS |
| Repository Owner | ZenWave360 |
| Stars | 12 |
| Watchers | 3 |
| Forks | 5 |
| Created | 2020-12-03T15:41:05Z |
| Last Updated | 2024-12-13T17:29:21Z |
| Archived | No |
| Language | TypeScript |
| Repository Owner | pyopenapi |
| Stars | 393 |
| Watchers | 13 |
| Forks | 90 |
| Created | 2014-07-27T06:47:30Z |
| Last Updated | 2025-10-06T09:15:33Z |
| Archived | No |
| Language | Python |
| Repository Owner | elasticio |
| Stars | 37 |
| Watchers | 10 |
| Forks | 24 |
| Created | 2016-07-26T10:29:14Z |
| Last Updated | 2025-06-10T08:39:30Z |
| Archived | No |
| Language | TypeScript |