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API Management · head to head

WSO2 API Manager vs Asyncapi

WSO2 API Manager logo

WSO2 API Manager

API Management

Complete API management platform for designing and managing APIs

From
Free
Rated
-
Full reviewWebsite
Asyncapi logo

Asyncapi

API Management

Specification and tools for defining asynchronous APIs

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: WSO2 API Manager the free open source distribution does not include a subscription to the WSO2 Update service, so continuous improvements and security patches require a paid subscription; Asyncapi complex to implement and debug asynchronous operations due to their non-linear and concurrent nature
  • They diverge on capability: WSO2 API Manager covers API Gateway, Asyncapi covers API Specification.

Where they differ

Only the attributes on which WSO2 API Manager and Asyncapi actually diverge.

Attributes where WSO2 API Manager and Asyncapi differ
AttributeWSO2 API ManagerAsyncapi
PlatformsJava, Linux, Docker, KubernetesWeb, CLI, IDE Extensions
Founded20052019

Identical on both: starting price (Free), pricing model (open-source), free tier (Yes), user rating (Not yet rated), category (API Management).

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 WSO2 API Manager

  • API Gateway
  • API Designer
  • Developer Portal
  • LDAP
  • Okta
  • Keycloak
  • Microservices
  • Java support

Only in Asyncapi

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

What people use each for

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

WSO2 API Manager

  • Publishing, securing and rate limiting APIs behind a gatewaynot Asyncapi
  • Running an API developer portal with subscription key managementnot Asyncapi
  • Self hosting an open source API management layer on premisesnot Asyncapi

Asyncapi

  • API Developmentnot WSO2 API Manager
  • API Gatewaynot WSO2 API Manager
  • API Testingnot WSO2 API Manager
  • API Documentationnot WSO2 API Manager
  • Microservicesnot WSO2 API Manager

Where each one falls short

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

WSO2 API Manager

  • The free open source distribution does not include a subscription to the WSO2 Update service, so continuous improvements and security patches require a paid subscription
  • A commercial production licence is not part of the free download and comes only with a subscription
  • No subscription price is published; Basic Support and Enterprise Support both require contacting sales for a quote
  • 24x7x365 coverage requires Enterprise Support; the general query SLA is one business day
  • A Customer Success Manager is a paid optional add on covering business hours only
  • Consulting services and WSO2 Private Cloud hosting are quoted separately

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

Pricing, plan by plan

WSO2 API Manager

Free
  • CommunityFree
    • Core API management
    • Community support
  • Commercial$undefined/monthly
    • Enterprise features
    • Technical support
    • SLA

Asyncapi

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

Which should you pick?

Choose WSO2 API Manager if

  • You need api gateway.
  • You want to start without paying.
  • You work on Java, Linux, Docker, Kubernetes.
  • You also want api designer.
WSO2 API Manager review

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

Questions people ask

Is WSO2 API Manager or Asyncapi better?
Neither clearly leads. WSO2 API Manager starts at Free and Asyncapi at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, WSO2 API Manager or Asyncapi?
WSO2 API Manager starts at Free and Asyncapi at Free.
Does WSO2 API Manager or Asyncapi run on more platforms?
WSO2 API Manager runs on Java, Linux, Docker, Kubernetes. Asyncapi runs on Web, CLI, IDE Extensions.
Can I use WSO2 API Manager for free?
Both have a free tier, so you can try either at no cost before committing.
What is WSO2 API Manager best used for?
WSO2 API Manager is most often used for publishing, securing and rate limiting apis behind a gateway, running an api developer portal with subscription key management, self hosting an open source api management layer on premises. Of those, publishing, securing and rate limiting apis behind a gateway and running an api developer portal with subscription key management are not what Asyncapi is typically brought in for.
What can WSO2 API Manager do that Asyncapi cannot?
WSO2 API Manager covers API Gateway, API Designer, Developer Portal, LDAP. Asyncapi covers API Specification, Code generation, Documentation, Multiple messaging protocols.

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
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
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
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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