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Software · head to head

Asyncapi vs Stoplight

Asyncapi logo

Asyncapi

Software

Specification and tools for defining asynchronous APIs

From
Free
Rated
-
Full reviewWebsite
Stoplight logo

Stoplight

Software

API design, documentation, and governance platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Asyncapi complex to implement and debug asynchronous operations due to their non-linear and concurrent nature; Stoplight the free plan allows one project and one user
  • They diverge on capability: Asyncapi covers API Specification, Stoplight covers API Design.

Where they differ

Only the attributes on which Asyncapi and Stoplight actually diverge.

Attributes where Asyncapi and Stoplight differ
AttributeAsyncapiStoplight
Pricing modelopen-sourcefreemium
PlatformsWeb, CLI, IDE ExtensionsWeb, Cloud
Founded20192014

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

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 Stoplight

  • API Design
  • API Documentation
  • Governance
  • GitHub
  • GitLab
  • Jenkins
  • Azure DevOps
  • Web support

What people use each for

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

Asyncapi

  • API Developmentnot Stoplight
  • API Gatewaynot Stoplight
  • API Testingnot Stoplight
  • API Documentationnot Stoplight
  • Microservicesnot Stoplight

Stoplight

  • Designing and documenting OpenAPI specifications visuallynot Asyncapi
  • Serving interactive API docs and instant mock servers from a specnot 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

Stoplight

  • The free plan allows one project and one user
  • Private projects, multi branch support and custom domains start at the Startup plan, $113 a month billed annually
  • SSO and shared style guides are Pro Team only, at $362 a month billed annually
  • Seats beyond each plan's allowance are $11 to $27 each per month depending on tier and billing period

Pricing, plan by plan

Asyncapi

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

Stoplight

Free
  • FreeFree
    • API design
    • Documentation
    • Community support
  • Pro$75/monthly
    • Governance
    • Advanced testing
    • Team collaboration
  • Enterprise$undefined/monthly
    • Custom deployment
    • SLA
    • Priority support

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 Stoplight if

  • You need api design.
  • You want to start without paying.
  • You work on Web, Cloud.
  • You also want api documentation.
Stoplight review

Questions people ask

Is Asyncapi or Stoplight better?
Neither clearly leads. Asyncapi starts at Free and Stoplight at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Asyncapi or Stoplight?
Asyncapi starts at Free and Stoplight at Free.
Does Asyncapi or Stoplight run on more platforms?
Asyncapi runs on Web, CLI, IDE Extensions. Stoplight runs on Web, Cloud.
Can I use Asyncapi for free?
Both have a free tier, so you can try either at no cost before committing.
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 Stoplight is typically brought in for.
What can Asyncapi do that Stoplight cannot?
Asyncapi covers API Specification, Code generation, Documentation, Multiple messaging protocols. Stoplight covers API Design, API Documentation, Governance, GitHub.

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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Related pages

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