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Cybersecurity · head to head

Signicat vs Swagger UI

Signicat logo

Signicat

Cybersecurity

European digital identity hub connecting national eID schemes

From
On request
Free plan
No
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

  • Only Swagger UI has a free tier, so it costs nothing to try first.
  • Each has a real cost: Signicat national eID scheme fees are passed through on top of Signicat's own charge, so a single-country business almost always pays less by integrating with the scheme directly.; Swagger UI only as good as the specification: a thin OpenAPI file produces thin documentation
  • They diverge on capability: Signicat covers eID scheme brokering, Swagger UI covers OpenAPI rendering.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

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

Attributes where Signicat and Swagger UI differ
AttributeSignicatSwagger UI
Starting priceOn requestFree
Pricing modelquoteOpen source, no licence fee
Free tierNoYes
PlatformsWeb, iOS, AndroidWeb, Self-hosted, Docker
CategoryCybersecurityDeveloper Tools

Identical on both: 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 Signicat

  • eID scheme brokering
  • Qualified electronic signatures
  • Document verification
  • AML screening
  • Authentication
  • Digital onboarding flows
  • eIDAS compliance

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.

Signicat

  • A lender expanding from Norway into Sweden, Denmark and the Netherlands without four separate eID integrationsnot Swagger UI
  • An insurer needing eIDAS qualified signatures on policy documents that will hold up in a European courtnot Swagger UI
  • A bank that wants customers to onboard with their existing national bank ID rather than photographing a passportnot Swagger UI
  • A public sector body needing cross-border recognition of notified eID schemes under eIDASnot Swagger UI

Swagger UI

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

Where each one falls short

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

Signicat

  • National eID scheme fees are passed through on top of Signicat's own charge, so a single-country business almost always pays less by integrating with the scheme directly.
  • Value is concentrated in Northern and Western Europe, and coverage in Southern and Eastern Europe is thinner, so a pan-European rollout still hits gaps requiring document fallback.
  • Pricing is per transaction and quoted, and because scheme rates vary by country the cost per onboarded customer differs materially between markets in ways that complicate unit economics.
  • Each eID scheme connection typically carries its own setup fee and approval process, so adding a country is a project with a lead time rather than a configuration change.
  • Availability is tied to the national schemes, meaning an outage at BankID or MitID stops your onboarding entirely and there is no vendor-side mitigation for it.

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

Signicat

On request
  • Signicat Platform$undefined/year
    • Priced per transaction with national scheme fees passed through
    • Signature and verification products licensed separately
    • Setup fee per eID scheme connected

Swagger UI

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

Which should you pick?

Choose Signicat if

  • You need eid scheme brokering.
  • You work on Web, iOS, Android.
  • You also want qualified electronic signatures.
Signicat 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 Signicat or Swagger UI better?
Neither clearly leads. Signicat starts at On request and Swagger UI at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Signicat or Swagger UI?
Swagger UI has a free tier; the other does not. Paid plans start at On request for Signicat and Free for Swagger UI.
Does Signicat or Swagger UI run on more platforms?
Signicat runs on Web, iOS, Android. Swagger UI runs on Web, Self-hosted, Docker.
Can I use Swagger UI for free?
Yes. Swagger UI has a free tier, so you can try it without paying. Signicat starts at On request.
What is Signicat best used for?
Signicat is most often used for a lender expanding from norway into sweden, denmark and the netherlands without four separate eid integrations, an insurer needing eidas qualified signatures on policy documents that will hold up in a european court, a bank that wants customers to onboard with their existing national bank id rather than photographing a passport, a public sector body needing cross-border recognition of notified eid schemes under eidas. Of those, a lender expanding from norway into sweden, denmark and the netherlands without four separate eid integrations and an insurer needing eidas qualified signatures on policy documents that will hold up in a european court are not what Swagger UI is typically brought in for.
What can Signicat do that Swagger UI cannot?
Signicat covers eID scheme brokering, Qualified electronic signatures, Document verification, AML screening. Swagger UI covers OpenAPI rendering, Try it out, Schema display, Self-hostable.

Answered from the vendors’ own pages

Signicat: Is this an alternative to a document verification vendor?

Only where national eID exists. In markets with a mature bank ID scheme it is better; elsewhere you fall back to document checks, which Signicat also provides.

Swagger UI: Is Swagger UI free?

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

Signicat: Do we still pay the eID schemes?

Yes. Scheme fees are passed through in addition to Signicat charges. Ask for the split when comparing to a direct integration.

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.

Signicat: Are signatures legally qualified?

Signicat supports eIDAS qualified electronic signatures, which carry the highest legal standing in the EU, as well as advanced signatures.

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.

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