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APIs · head to head

Asyncapi vs Skaleet

Asyncapi logo

Asyncapi

APIs

Specification and tools for defining asynchronous APIs

From
Free
Rated
-
Full reviewWebsite
Skaleet logo

Skaleet

APIs

Cloud-native core banking and payment hub with deployments measured in months

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Asyncapi has a free tier, so it costs nothing to try first.
  • Each has a real cost: Asyncapi complex to implement and debug asynchronous operations due to their non-linear and concurrent nature; Skaleet the installed base is in the tens rather than the hundreds, so the pool of consultants and systems integrators who know the platform is small and expensive.
  • They diverge on capability: Asyncapi covers API Specification, Skaleet covers Cloud-native core.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Asyncapi and Skaleet actually diverge.

Attributes where Asyncapi and Skaleet differ
AttributeAsyncapiSkaleet
Starting priceFreeOn request
Pricing modelopen-sourcequote
Free tierYesNo
PlatformsWeb, CLI, IDE ExtensionsWeb, REST API, Linux
Founded2019Unknown

Identical on both: 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 Asyncapi

  • API Specification
  • Code generation
  • Documentation
  • Multiple messaging protocols
  • Code generators
  • Specification support
  • Tools support
  • CLI support

Only in Skaleet

  • Cloud-native core
  • Payment hub
  • Card management
  • Lending
  • API-first
  • Configurable products

What people use each for

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

Asyncapi

  • API Developmentnot Skaleet
  • API Gatewaynot Skaleet
  • API Testingnot Skaleet
  • API Documentationnot Skaleet
  • Microservicesnot Skaleet

Skaleet

  • A banking group launching a digital savings or deposit brand in a new country within a yearnot Asyncapi
  • A bank modernising payments to ISO 20022 without replacing its whole corenot Asyncapi
  • A payroll or HR software company adding embedded banking to its productnot Asyncapi
  • A payment service provider needing a ledger and accounts under its existing licencenot Asyncapi

Where each one falls short

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

Asyncapi

  • Complex to implement and debug asynchronous operations due to their non-linear and concurrent nature
  • Keeping AsyncAPI documents up to date is challenging as systems evolve
  • Tracing and debugging asynchronous operations is more difficult than synchronous request-response patterns

Skaleet

  • The installed base is in the tens rather than the hundreds, so the pool of consultants and systems integrators who know the platform is small and expensive.
  • Speed references are mostly greenfield launches inside large groups, which is an easier problem than migrating an existing book off a legacy core.
  • It is European-centric, with payment rails and regulatory work concentrated on SEPA and EU requirements rather than global coverage.
  • As a smaller vendor carrying a bank core, it attracts hard concentration and viability questions in procurement that larger competitors do not face.
  • Pricing is unpublished and scaled by accounts and transactions, so a bank whose volumes grow faster than forecast faces cost escalation it did not model.

Pricing, plan by plan

Asyncapi

Free
  • Open SourceFree
    • AsyncAPI specification
    • Tools
    • Community support

Skaleet

On request
  • Skaleet Core Banking Platform$undefined/year
    • Subscription licence scaled by accounts and transaction volume
    • Payment hub licensable separately from the full core
    • Implementation and configuration charged as a project

Which should you pick?

Choose Asyncapi if

  • You need api specification.
  • You want to start without paying.
  • You work on Web, CLI, IDE Extensions.
  • You also want code generation.
Asyncapi review

Choose Skaleet if

  • You need cloud-native core.
  • You work on Web, REST API, Linux.
  • You also want payment hub.
Skaleet review

Questions people ask

Is Asyncapi or Skaleet better?
Neither clearly leads. Asyncapi starts at Free and Skaleet at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Asyncapi or Skaleet?
Asyncapi has a free tier; the other does not. Paid plans start at Free for Asyncapi and On request for Skaleet.
Does Asyncapi or Skaleet run on more platforms?
Asyncapi runs on Web, CLI, IDE Extensions. Skaleet runs on Web, REST API, Linux.
Can I use Asyncapi for free?
Yes. Asyncapi has a free tier, so you can try it without paying. Skaleet starts at On request.
What is Asyncapi best used for?
Asyncapi is most often used for api development, api gateway, api testing, api documentation. Of those, api development and api gateway are not what Skaleet is typically brought in for.
What can Asyncapi do that Skaleet cannot?
Asyncapi covers API Specification, Code generation, Documentation, Multiple messaging protocols. Skaleet covers Cloud-native core, Payment hub, Card management, Lending.

Answered from the vendors’ own pages

Asyncapi: What is AsyncAPI used for?

AsyncAPI is an open-source specification for defining and documenting asynchronous APIs, message-driven systems, and event-driven architectures. It serves the same purpose for async APIs as OpenAPI does for REST APIs, providing standardized documentation, code generation, and tooling.

Source
Skaleet: What was Skaleet called before?

TagPay. The company rebranded to Skaleet while keeping the same platform lineage.

Asyncapi: Is AsyncAPI free to use?

Yes, AsyncAPI is completely free and open-source. It is hosted by the Linux Foundation and supported by community contributions and sponsorships from companies like Postman, IBM, IQVIA Technology, and Solace.

Source
Skaleet: Can I buy just the payment hub?

Yes. The payment engine is licensable standalone and can sit over an existing core, which is a common first step.

Asyncapi: What protocols and technologies does AsyncAPI support?

AsyncAPI supports multiple protocols and technologies including Kafka, RabbitMQ, MQTT, Socket.IO, AWS EventBridge, and others. It provides language support for JavaScript/TypeScript, Python, Java, Go, C#/.NET, Kotlin, and PHP.

Source
Skaleet: How fast are real deployments?

Named European deployments have gone live in six to twelve months, including a Crédit Agricole savings platform live in Germany in eight months.

Asyncapi: Does AsyncAPI have IDE support?

Yes, AsyncAPI has IDE extensions available for VSCode and IntelliJ, along with CLI utilities and GitHub Actions integration for developers.

Source
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