Alternatives

Products that do what Open-source Swagger/OpenAPI documentation engine does

1. 1AF
   A faster way to prototype your APIs using OpenAPI 3 and Swagger UI▲77

   2020 · github.com

2. 2
   Swagger Editor▲207

   Beautiful API references from Swagger, OpenAPI spec

   2023

3. 3
   Swagger Inspector▲141

   Free online tool to test APIs and autogenerate documentation

   2018

4. 4NJ
   Nuxt.js OpenAPI / Swagger API Reference Documentation▲5

   2024 · github.com

5. 5OF
   OpenAPI fuzzer – fuzzing APIs based on OpenAPI specification▲76

   2021 · github.com

6. 6SO
   Scalasaurus – Open API / Swagger API References for Docusuarus▲8

   2024 · github.com

7. 7SA
   SlashApi – a web platform to build REST APIs without code▲88

   2021 · slashapi.com

8. 8WA
   Web App for generating mocked data from an OpenAPI specification▲19

   2020 · github.com

9. 9ST
   Scrape to Swagger – webscraper for API documentation▲6

   2016 · github.com

10. 10OI
    Oag – Idiomatic OpenAPI Go client code generator▲11

    2017 · github.com

11. 11NW
    New way to test APIs with OpenAPI and Postman▲80

    2021 · github.com

12. 12JA
    Javalin, a Java/Kotlin REST API Framework▲50

    2017 · javalin.io

13. 13SA
    Stargate – An open source API framework for data▲72

    2020 · stargate.io

14. 14SU
    Swagger UI for gRPC and gRPC Web▲9

    2021 · blog.gendocu.com

15. 15RB
    Rust built open-sourced CLI tool for API specification validation▲23

    2022 · github.com

16. 16PA
    Pdoc, a lightweight Python API documentation generator▲45

    2021 · pdoc.dev

17. 17IB
    I built a No Code Dockerized MCP Server for any API - AI Agent▲7

    TLDR: OpenAPI-MCP is a Dockerized server that dynamically generates Model Context Protocol (MCP) tool definitions directly from your Swagger/OpenAPI documentation. It allows your AI agent to seamlessly access any API without additional coding, streamlining development and eliminating repetitive manual setup. For more details, code updates-----: GitHub: ckanthony/openapi-mcp Docker Hub: ckanthony/openapi-mcp

    2025 · github.com

18. 18TC
    Tyk Cloud – Open Source API Management in The Cloud▲36

    2015 · cloud.tyk.io

19. 19AO
    An Open Source Documentation Server▲12

    2016 · blog.minio.io

20. 20UR
    UIGen – Runtime front end for any OpenAPI spec with AI skills▲5

    May 2026 · github.com

21. 21PS
    PostgREST Starter Kit – Boilerplate and Tooling for Authoring REST APIs▲7

    2017 · github.com

22. 22OS
    Open Source Documentation Portal Built on Jekyll▲20

    2015 · blog.branch.io

23. 23AI
    APIBoard, Interactive API Documentation with JS-Powered Workflows▲15

    2015 · apiboard.us

24. 24RI
    Restful.io – a curated list of resources for API developers▲18

    2015 · restful.io

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