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APIs · head to head

Spring Cloud Gateway vs Swagger

Spring Cloud Gateway logo

Spring Cloud Gateway

APIs

API gateway built on Project Reactor for building microservices

From
Free
Rated
-
Full reviewWebsite
Swagger logo

Swagger

APIs

API design and documentation platform for building, testing, and managing APIs

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Spring Cloud Gateway released under the Apache 2.0 license, free and open source with no commercial tier; Swagger specific pricing details not published on main website; requires accessing pricing page or contacting sales
  • They diverge on capability: Spring Cloud Gateway covers Routing, Swagger covers API Specification.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Spring Cloud Gateway and Swagger actually diverge.

Attributes where Spring Cloud Gateway and Swagger differ
AttributeSpring Cloud GatewaySwagger
Pricing modelopen-sourcefreemium
PlatformsJava, Spring BootWeb, CLI, Desktop
Founded19982011

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (APIs).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Spring Cloud Gateway

  • Routing
  • Path Rewriting
  • Circuit Breaker
  • Spring Boot
  • Spring Security
  • Spring Cloud
  • Java support
  • Spring Boot support

Only in Swagger

  • API Specification
  • Interactive Documentation
  • Code Generation
  • GitHub
  • GitLab
  • Azure DevOps
  • Jira
  • Web support

What people use each for

The jobs each tool is most often brought in to do.

Spring Cloud Gateway

  • API Development
  • API Gateway
  • API Testing
  • API Documentation
  • Microservices

Swagger

  • API Development
  • API Gateway
  • API Testing
  • API Documentation
  • Microservices

Both are used for api development, api gateway, api testing, api documentation, microservices, on those jobs the choice comes down to price and fit rather than capability.

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Spring Cloud Gateway

  • Released under the Apache 2.0 license, free and open source with no commercial tier

Swagger

  • Specific pricing details not published on main website; requires accessing pricing page or contacting sales

Pricing, plan by plan

Spring Cloud Gateway

Free
  • Open SourceFree
    • Core Spring Cloud Gateway
    • Community support

Swagger

Free
  • FreeFree
    • OpenAPI specification
    • Swagger UI
    • API documentation
  • Professional$20/monthly
    • Advanced features
    • Team collaboration
    • API testing
  • Enterprise$undefined/monthly
    • Custom deployment
    • Advanced security
    • Dedicated support

Which should you pick?

Choose Spring Cloud Gateway if

  • You need routing.
  • You want to start without paying.
  • You work on Java, Spring Boot.
  • You also want path rewriting.
Spring Cloud Gateway review

Choose Swagger if

  • You need api specification.
  • You want to start without paying.
  • You work on Web, CLI, Desktop.
  • You also want interactive documentation.
Swagger review

Questions people ask

Is Spring Cloud Gateway or Swagger better?
Neither clearly leads. Spring Cloud Gateway starts at Free and Swagger at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Spring Cloud Gateway or Swagger?
Spring Cloud Gateway starts at Free and Swagger at Free.
Does Spring Cloud Gateway or Swagger run on more platforms?
Spring Cloud Gateway runs on Java, Spring Boot. Swagger runs on Web, CLI, Desktop.
Can I use Spring Cloud Gateway for free?
Both have a free tier, so you can try either at no cost before committing.
What is Spring Cloud Gateway best used for?
Spring Cloud Gateway is most often used for api development, api gateway, api testing, api documentation.
What can Spring Cloud Gateway do that Swagger cannot?
Spring Cloud Gateway covers Routing, Path Rewriting, Circuit Breaker, Spring Boot. Swagger covers API Specification, Interactive Documentation, Code Generation, GitHub.

Answered from the vendors’ own pages

Spring Cloud Gateway: Is Spring Cloud Gateway free?

Yes, Spring Cloud Gateway is free and open-source software. It is part of the Spring ecosystem and available through GitHub repositories with open-source dependencies like spring-cloud-starter-gateway-server-webflux and spring-cloud-starter-gateway-server-webmvc.

Source
Swagger: How much does Swagger cost?

Swagger does not publish specific pricing details on its main website. A free tier is available with a Start Free Trial option. For detailed pricing information, users must visit the dedicated pricing page or contact Swagger sales directly.

Source
Spring Cloud Gateway: What enterprise support is available for Spring Cloud Gateway?

Tanzu Spring provides optional enterprise support including Day 0 access to security patches for organizations requiring guaranteed support, but specific pricing is not published on the Spring Cloud Gateway project page.

Source
Swagger: Does Swagger offer a free plan?

Yes, Swagger offers a free tier described as simple, useful, and easy to master for API client functionality. Exact feature details and limitations are not specified on the homepage.

Source
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