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No-Code · head to head

Corteza vs Swagger UI

Corteza logo

Corteza

No-Code

Apache-licensed open source low-code platform, formerly Crust, positioned against Salesforce

From
Free
Free plan
Yes
Full reviewWebsite
Swagger UI logo

Swagger UI

Developer Tools

Interactive API documentation generated from OpenAPI specs

From
Free
Free plan
Yes
Full reviewWebsite

The short version

  • Each has a real cost: Corteza planet Crust is a small company of roughly a dozen or so people, so the entire commercial support capability behind Corteza is thin and a large deployment can outgrow the vendors ability to respond.; Swagger UI only as good as the specification: a thin OpenAPI file produces thin documentation
  • They diverge on capability: Corteza covers Corteza Low Code, Swagger UI covers OpenAPI rendering.
  • Prices and features above were last checked on 31 August 2026.

Where they differ

Only the attributes on which Corteza and Swagger UI actually diverge.

Attributes where Corteza and Swagger UI differ
AttributeCortezaSwagger UI
PlatformsWeb, Linux, Self-hosted, DockerWeb, Self-hosted, Docker
CategoryNo-CodeDeveloper Tools

Identical on both: starting price (Free), pricing model (Open source, no licence fee), free tier (Yes), user rating (Not yet rated).

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 Corteza

  • Corteza Low Code
  • Automation and workflow
  • Bundled CRM
  • Case management
  • Federation
  • Role-based access control
  • Corteza Messaging and integrations
  • Self-hosted deployment

Only in Swagger UI

  • OpenAPI rendering
  • Try it out
  • Schema display
  • Self-hostable

What people use each for

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

Corteza

  • A European public body that needs a case management system on servers inside its own jurisdiction with an auditable licence and no per-seat vendor feenot Swagger UI
  • An NGO replacing a Salesforce donation that has run out, needing to keep the data model but remove the recurring costnot Swagger UI
  • An integrator building a regulated vertical application it intends to resell, requiring a permissive licence it can ship commerciallynot Swagger UI
  • A mid-size European company that wants one platform for internal applications and a sales pipeline without paying per seat as headcount growsnot Swagger UI

Swagger UI

  • Publishing API documentation that stays in step with the specificationnot Corteza
  • Letting developers try endpoints before writing any client codenot Corteza
  • Internal API discovery across teamsnot Corteza

Where each one falls short

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

Corteza

  • Planet Crust is a small company of roughly a dozen or so people, so the entire commercial support capability behind Corteza is thin and a large deployment can outgrow the vendors ability to respond.
  • No pricing is published for Planet Crusts support, hosting or implementation services, so the true running cost of a supported deployment cannot be estimated without a sales conversation.
  • The connector ecosystem is small compared with commercial low-code platforms, so integrations with common SaaS tools usually mean writing against the REST API rather than installing something.
  • Hiring is hard: almost nobody has Corteza on a CV, so you are training internal developers on a niche platform and you cannot easily replace them.
  • The bundled CRM is a starting point rather than a mature product, and teams that expect Salesforce-equivalent sales functionality out of the box will spend months building the gap themselves.

Swagger UI

  • Only as good as the specification: a thin OpenAPI file produces thin documentation
  • Default presentation is dated compared with modern documentation tools
  • Large specifications render slowly and become hard to navigate
  • Try it out against production needs care with authentication and CORS, and is often disabled as a result

Pricing, plan by plan

Corteza

Free
  • Corteza communityFree
    • Apache 2.0 licensed with no feature gating
    • Low-code builder, workflow engine, CRM and case management included
    • Self-hosted on your own infrastructure
  • Planet Crust support and services$undefined/year
    • Commercial support, hosting and implementation from Planet Crust
    • Custom application development
    • Training

Swagger UI

Free
  • Swagger UIFree
    • Full functionality
    • Commercial use permitted
    • Community support

Which should you pick?

Choose Corteza if

  • You need corteza low code.
  • You want to start without paying.
  • You work on Web, Linux, Self-hosted, Docker.
  • You also want automation and workflow.
Corteza review

Choose Swagger UI if

  • You need openapi rendering.
  • You want to start without paying.
  • You work on Web, Self-hosted, Docker.
  • You also want try it out.
Swagger UI review

Questions people ask

Is Corteza or Swagger UI better?
Neither clearly leads. Corteza starts at Free and Swagger UI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Corteza or Swagger UI?
Corteza starts at Free and Swagger UI at Free.
Does Corteza or Swagger UI run on more platforms?
Corteza runs on Web, Linux, Self-hosted, Docker. Swagger UI runs on Web, Self-hosted, Docker.
Can I use Corteza for free?
Both have a free tier, so you can try either at no cost before committing.
What is Corteza best used for?
Corteza is most often used for a european public body that needs a case management system on servers inside its own jurisdiction with an auditable licence and no per-seat vendor fee, an ngo replacing a salesforce donation that has run out, needing to keep the data model but remove the recurring cost, an integrator building a regulated vertical application it intends to resell, requiring a permissive licence it can ship commercially, a mid-size european company that wants one platform for internal applications and a sales pipeline without paying per seat as headcount grows. Of those, a european public body that needs a case management system on servers inside its own jurisdiction with an auditable licence and no per-seat vendor fee and an ngo replacing a salesforce donation that has run out, needing to keep the data model but remove the recurring cost are not what Swagger UI is typically brought in for.
What can Corteza do that Swagger UI cannot?
Corteza covers Corteza Low Code, Automation and workflow, Bundled CRM, Case management. Swagger UI covers OpenAPI rendering, Try it out, Schema display, Self-hostable.

Answered from the vendors’ own pages

Corteza: Is Corteza the same thing as Crust?

Yes. The project was branded Crust and renamed Corteza in 2019 when Crust Technology donated it to the Commons Conservancy.

Swagger UI: Is Swagger UI free?

Yes, open source under the Apache 2.0 licence. SmartBear sells commercial SwaggerHub separately.

Corteza: Who owns the code?

The Commons Conservancy, a Dutch foundation. Planet Crust in Cork is the primary developer and sells commercial services around it.

Swagger UI: What is the difference between Swagger and OpenAPI?

OpenAPI is the specification format; Swagger is the toolset around it, including Swagger UI. The specification was renamed from Swagger to OpenAPI in 2016.

Corteza: Is there a paid enterprise edition?

No. Corteza is Apache 2.0 with no feature gating. Planet Crust sells support, hosting and development instead of a restricted edition.

Swagger UI: Can Swagger UI make real API calls?

Yes, through its try-it-out control, though authentication and CORS configuration often mean it is disabled for production APIs.

Corteza: Can it genuinely replace Salesforce?

For case management and a straightforward sales pipeline on a self-hosted footprint, yes. For a large sales organisation relying on AppExchange products and a mature ecosystem, no.

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