openapi3 VS swagger-ui

Compare openapi3 vs swagger-ui and see what are their differences.


OpenAPI 3.0 data model (by biocad)


Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API. (by swagger-api)
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openapi3 swagger-ui
0 87
34 22,763
- 0.9%
5.9 9.3
4 days ago 5 days ago
Haskell JavaScript
BSD 3-clause "New" or "Revised" License Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of openapi3. We have used some of these posts to build our list of alternatives and similar projects.

We haven't tracked posts mentioning openapi3 yet.
Tracking mentions began in Dec 2020.


Posts with mentions or reviews of swagger-ui. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-10-03.
  • Designing a secure API
    2 projects | | 3 Oct 2022
    Documentation is everything that the engineering team writes. It is, however, kind of ignored by other developers. And there are several reasons for this, for example, poorly documented or outdated information. The good news is that there are good tools that can help us on this documentation journey. Swagger, for example, greatly simplifies this process for us. There is also the Open API whose objective is to create a specification for the APIs, bringing several advantages in addition to the documentation. With a little help, it is possible to generate an SDK for several languages ​​from the Open API. For example, if you are from the Java world you can add code generation with a maven plugin. And it is possible to generate this SDK for several languages. In addition to automatically generating the APIs SDK, there is the option to create manually. Despite the work, there is the possibility of polishing this SDK with, for example, DSL and Fluent APIs concepts. In this approach it is worth using the language documentation if you use Java or JavaDoc, for example.
  • In One Minute : Swagger
    2 projects | | 2 Oct 2022
    Official Website :- Open API :-
  • How to quickly publish Restful APIs in OAS 3.0 using the IRIS ApiPub tool
    2 projects | | 28 Sep 2022
    This project also includes a complete sample implementation (apiPub.samples.api) of the Swagger Petstore, which is the official swagger sample.
  • How to get started with Hacktoberfest
    2 projects | | 26 Sep 2022
    For example,
  • Java Spring boot does not allow access to api urls to admins
    2 projects | | 25 Sep 2022
    I have also setup swagger (swagger is somewhat like postman). I hit its URL, it redirected to Google login. I entered my google login and now it showed me swagger UI. On first time log in, the logged in user's email is captured in db and is given role ROLE_USER. I then went to DB and modified its role to ROLE_ADMIN and restarted the app.
  • How to find an open source ready front-end that needs a backend to get running?
    3 projects | | 24 Sep 2022
    FastAPI for Python has an awesome way of doing this. It comes with two choices: Swagger and Redoc, the former being more interactive while the latter is (IMO) more visually appealing. I'm sure you could implement one of these using Spring.
    3 projects | | 24 Sep 2022
    Would something like Swagger work? Here's an example of a Swagger UI on top of an API
  • How to get a good understanding and build a rest api?
    3 projects | | 22 Sep 2022
    Then see how you could include swagger/openAPI definitions and documentation for your API.
  • 6 tips to make your JS/TS repository more new-joiners friendly
    3 projects | | 31 Jul 2022
    Defining and documenting API can be a challenging task. Fortunately, we have something called a swagger — a set of open-source tools built around the OpenAPI Specification that can help you design, build, document, and consume REST APIs. Thanks to them, you can create a webpage with all endpoints defined with their query params, body params, schemas of the expected response, etc. What’s more, you can also test calls directly from that page. You don’t have to dig into source code to understand APIs. And using or changing your service is much easier, don’t you think? Let’s say some words about how to implement them in our project lifecycles. There are two main approaches to defining swagger: as a contract before development or autogenerating that based on created service code. Both of them have their own cons and pros. Defining swagger file as an API contract before touching a code allows us to parallel work between different teams dependent on that service and create typescript types based on that (useful when your backend is written in Node and you want to share types between repositories). But also requires more effort— all endpoints have to be defined manually and some later changes in service may be missed (developers have to remember about changes in two places). On the other hand, you can use annotations to generating swagger files automatically, based on source code — using libraries available for almost all languages. Thanks to that you don’t have to worry about updating documentation, but all consumers have to wait for a working version of API to start their work and some comments. Nevertheless, no matter which option is better in your case, using swagger definitely can take your API documentation to a completely new level.
  • Ultra-minimal JSON schemas with TypeScript inference
    11 projects | | 27 Jul 2022
    Compared to a struct in C, Rust, or Golang it takes more typing on behalf of the programmer and only works in a narrowly specific set of circumstances.

    Convenient in some ways (e.g. if you only are comfortable in JS), and does nothing for other contexts.

    Is this more than a subset of Wordnik's Swagger?

What are some alternatives?

When comparing openapi3 and swagger-ui you can also consider the following projects:

ReDoc - 📘 OpenAPI/Swagger-generated API Reference Documentation [Moved to:]

fastapi - FastAPI framework, high performance, easy to learn, fast to code, ready for production

redoc - 📘 OpenAPI/Swagger-generated API Reference Documentation

fiber-swagger - fiber middleware to automatically generate RESTful API documentation with Swagger 2.0.

drf-spectacular - Sane and flexible OpenAPI 3 schema generation for Django REST framework.

prism - Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.

NSwag - The Swagger/OpenAPI toolchain for .NET, ASP.NET Core and TypeScript.

uuid - Go package for UUIDs based on RFC 4122 and DCE 1.1: Authentication and Security Services.

slate - Beautiful static documentation for your API

drf-yasg - Automated generation of real Swagger/OpenAPI 2.0 schemas from Django REST Framework code.

SonarQube - Continuous Inspection

Hugo - The world’s fastest framework for building websites.