Free swagger.io AlternativesDocumentation Generators and other similar apps like swagger.io

The best free alternative to swagger.io is Doxygen, which is also Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to swagger.io and many of them is free so hopefully you can find a suitable replacement. Other interesting free alternatives to swagger.io are Slate API Docs Generator, API Tester, Redocly and Magidoc.

swagger.io alternatives are mainly Documentation Generators but may also be API Clients or HTTP Clients. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of swagger.io.

swagger.io

Free • Open Source
Documentation Generator

Swagger is an open source RESTapi Documentation Tool.

More about swagger.io

swagger.io alternatives page was last updated

Doxygen
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
Haiku
34 Doxygen alternatives
Doxygen is a tool for generating documentation from annotated C++ sources, as well as other popular programming languages like C, Objective-C, C#, PHP, Java, Python, IDL (CORBA, Microsoft, and UNO/OpenOffice flavors), Fortran, VHDL, Tcl, and to some extent D.
- - Doxygen is the most popular Windows, Mac & Linux alternative to swagger.io.
- - Doxygen is the most popular Open Source & free alternative to swagger.io.
Doxygen has no features, suggest some!
Slate API Docs Generator
Is this is a good alternative?
Yes
No
Free • Open Source
Documentation Generator
Mac
Linux
Self-Hosted
31 Slate API Docs Generator alternatives
Create beautiful, intelligent, responsive API documentation.
- - Slate API Docs Generator is the most popular Self-Hosted alternative to swagger.io.
Slate API Docs Generator has no features, suggest some!
API Tester
Is this is a good alternative?
Yes
No
Free • Proprietary
API Client
HTTP Client
Mac
Android
iPhone
Android Tablet
HUAWEI AppGallery
iPad
40 API Tester alternatives
API Tester is the first mobile app to test any type of API on the go. Test REST, GraphQL, WebSocket, SOAP, JSON RPC, XML, HTTP, and HTTPS APIs completely for free, on iOS or Android.
- - API Tester is the most popular Android, iPhone, iPad & Android Tablet alternative to swagger.io.
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API Tester Features
REST API
GraphQL API
Websocket testing
API Testing
API Management
Redocly
Is this is a good alternative?
Yes
No
Free • Open Source
Online
Self-Hosted
16 Redocly alternatives
OpenAPI/Swagger-generated API Reference Documentation.
- - Redocly is the most popular Web-based alternative to swagger.io.
Suggest and vote on features
Redocly Features
Open API
Magidoc
Is this is a good alternative?
Yes
No
Free • Open Source
Documentation Generator
Mac
Windows
Linux
Online
4 Magidoc alternatives
Magidoc is a free open source software that can help you generate reference documentation for any GraphQL API.
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Magidoc Features
1. Support for MarkDownMagidoc supports MarkDown for document formatting.
2. Live PreviewInstantly see what your files and documents look like as you create them.
Customizable
GraphQL
RAML
Is this is a good alternative?
Yes
No
Free • Open Source
Self-Hosted
3 RAML alternatives
RESTful API Modeling Language (RAML) makes it easy to manage the whole API lifecycle from design to sharing. It's concise - you only write what you need to define - and reusable. It is machine readable API design that is actually human friendly.
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RAML Features
REST API
Aglio
Is this is a good alternative?
Yes
No
Free • Open Source
Documentation Generator
Self-Hosted
11 Aglio alternatives
aglio - An API Blueprint renderer that supports multiple themes and outputs static HTML that can be served by any web host. API Blueprint is a Markdown-based document format that lets you write API descriptions and documentation in a simple and straightforward way.
Aglio has no features, suggest some!
Treblle
Is this is a good alternative?
Yes
No
Free • Proprietary
Error Logger
Documentation Generator
Mac
Windows
Online
Android
iPhone
Android Tablet
iPad
Software as a Service (SaaS)
17 Treblle alternatives
Treblle is an all-in-one platform for the entire API lifecycle that helps engineering and product teams build, ship, and maintain rest-based APIs faster. A very intuitive UI gives value, especially to teams that have APIs as a product.
- - Treblle is the most popular SaaS alternative to swagger.io.
Suggest and vote on features
Treblle Features
1. LightweightTreblle consumes less device resources compared to similar apps.
API Management
Application & API Monitoring
Logging
Requests monitoring
Performance Monitoring
REST API
Bump.sh
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Documentation Generator
Software as a Service (SaaS)
11 Bump.sh alternatives
Bump.sh helps you build a branded single source of truth, cataloging all your APIs. We’ve created the reference point for developers and product managers consuming and building APIs, no matter which technology they rely on (OpenAPI, AsyncAPI, and more soon).
Suggest and vote on features
Bump.sh Features
1. Command line interfaceBump.sh either have CLI support or is a CLI-only app.
2. Support for MarkDownBump.sh supports MarkDown for document formatting.
Change Management
Catalog
Open API
OpenAPI integration
REST API
API Management
dAPI
Is this is a good alternative?
Yes
No
Free • Open Source
Self-Hosted
13 dAPI alternatives
Node.js/JavaScript Dojo API viewer and static API viewer document generator.
dAPI has no features, suggest some!
Add a screenshot
APIdoc
Is this is a good alternative?
Yes
No
Free • Open Source
Mac
Windows
Linux
Self-Hosted
JavaScript
13 APIdoc alternatives
Inline Documentation for RESTful web APIs.
Suggest and vote on features
APIdoc Features
REST API
SwaggerGo
Is this is a good alternative?
Yes
No
Free Personal • Proprietary
Documentation Generator
Online
8 SwaggerGo alternatives
The simple way for share your interactive API documentation.

SwaggerGo! is a zero configuration tool based on Swagger UI. Automatic CORS support, you don't need to change anything in your server configuration.
SwaggerGo has no features, suggest some!
Discontinued
Seems to be dead. URL is not working, last update on twitter was in 2015.