Alternatives to OpenAPI 3 Generator

18.4

Scalar

Scalar is a collection of API products for documentation, client generation, API management, requests, and MCP server use.

Free planOpen sourceWebAPILinux

From $150 a month

VisitDetails

27.8

FE

Fern

Fern Docs builds interactive documentation websites from Markdown and API specifications, while Fern also generates strongly typed client libraries.

Free planOpen sourceWebAPILinux

Free plan

VisitDetails

37.5

Theneo

Theneo is a developer portal platform for publishing API references, guides, changelogs, and private customer portals.

Free planWebAPIExtension

From $120 a month

VisitDetails

4. 4

   Redocly

   WebAPIExtension
   7.0From $10 a month
   Visit
5. 5

   Mihari

   Mihari is a cloud observability platform combining uptime monitoring, on-call alerting, telemetry, API documentation, and error tracking.

   Free planWeb
   6.7From €19 a month
   Visit
6. 6

   ReadMe

   Free planWeb
   6.7From $250 a month
   Visit
7. 7

   ApiNotes

   ApiNotes turns OpenAPI and Swagger specifications into hosted interactive documentation and generates changelogs with alerts for breaking changes.

   Free planWeb
   6.6From $19 a month
   Visit
8. 8PA

   Palt

   Palt is a hosted platform for creating, publishing, and managing interactive API documentation from OpenAPI specifications.

   Free planWeb
   6.6From $19 a month
   Visit
9. 9

   PilotDocs

   PilotDocs is a hosted platform for creating, managing, and publishing interactive API documentation.

   Free planWeb
   6.6From $49 a month
   Visit
10. 10

    Endrel

    Endrel is a hosted workspace for API documentation that makes specifications searchable and uses AI review to flag documentation drift.

    Free planWebAPI
    6.5From ₹1,499 a month
    Visit
11. 11

    Javadoc

    Javadoc generates HTML API documentation from Java source files and is installed with the Java Development Kit (JDK).

    Free planWebLinuxmacOSWindows
    6.5Free plan
    Visit
12. 12TY

    TypeDoc

    TypeDoc is a free documentation generator for TypeScript projects.

    Free planAPILinuxSelf-hosted
    6.5Free plan
    Visit
13. 13

    Bump.sh

    Bump.sh is a paid web, API, and self-hosted service for publishing API documentation and providing MCP servers that update with API releases.

    WebAPISelf-hosted
    6.4From $50 a month
    Visit
14. 14

    Stoplight Elements

    Free planWebSelf-hosted
    6.4Free plan
    Visit
15. 15

    Doxygen

    Doxygen is a free documentation generator that turns source-code comments into documentation and parses classes, functions and variables.

    Free planLinuxmacOSWindows
    6.2Free plan
    Visit
16. 16

    Apiary

    Apiary is a hosted web platform for designing, prototyping, documenting, and testing APIs.

    Free planWebAPI
    6.1Free plan
    Visit
17. 17

    pdoc

    pdoc creates API documentation from Python projects and arranges it according to each project's module hierarchy.

    WebLinuxmacOSSelf-hosted
    6.1
    Visit
18. 18

    Zudoku

    Zudoku is a free, open-source framework for building API documentation and developer portals around OpenAPI.

    Free planWebSelf-hosted
    6.1Free plan
    Visit
19. 19MI

    Miredot

    Self-hosted
    6.0From $15 a month
    Visit
20. 20

    phpDocumentor

    phpDocumentor turns PHP source code and DocBlock comments into API documentation.

    Free planLinuxmacOSSelf-hosted
    6.0Free plan
    Visit
21. 21WI

    Widdershins

    Widdershins converts API definition files into documentation inputs for rendering pipelines.

    Free planAPILinuxSelf-hosted
    6.0Free plan
    Visit
22. 22RA

    RapiDoc

    RapiDoc is a responsive web component that renders interactive API documentation from OpenAPI and Swagger specifications.

    Free planWebSelf-hosted
    5.9Free plan
    Visit
23. 23RA

    RAML2HTML

    RAML2HTML is a free, open-source Node.js package that generates HTML documentation from RAML.

    Free planLinuxSelf-hosted
    5.8Free plan
    Visit
24. 24DA

    DapperDox

    DapperDox is an open-source API documentation generator and server for OpenAPI (Swagger) specifications.

    WebLinuxSelf-hostedWindows
    5.7
    Visit
25. 25SW

    Swagger2Markup

    APILinuxSelf-hosted
    5.5
    Visit
26. 26JS

    JSDoc

    APISelf-hosted
    5.4
    Visit

Back to OpenAPI 3 Generator