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APIs · head to head

Asyncapi vs Penpot

Asyncapi logo

Asyncapi

APIs

Specification and tools for defining asynchronous APIs

From
Free
Rated
-
Full reviewWebsite
Penpot logo

Penpot

Developer Tools

Open source design and prototyping 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; Penpot smaller user base and community compared to Figma means fewer templates and resources
  • They diverge on capability: Asyncapi covers API Specification, Penpot covers Vector editing.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Asyncapi and Penpot actually diverge.

Attributes where Asyncapi and Penpot differ
AttributeAsyncapiPenpot
Pricing modelopen-sourceUnknown
PlatformsWeb, CLI, IDE ExtensionsWeb, Windows, macOS, Linux
CategoryAPIsDeveloper Tools
Founded20192021

Identical on both: starting price (Free), 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 Asyncapi

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

Only in Penpot

  • Vector editing
  • Interactive prototyping
  • Design systems
  • Components & libraries
  • Real-time collaboration
  • SVG support
  • CSS Grid & Flexbox
  • Code export

What people use each for

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

Asyncapi

  • API Developmentnot Penpot
  • API Gatewaynot Penpot
  • API Testingnot Penpot
  • API Documentationnot Penpot
  • Microservicesnot Penpot

Penpot

  • UI/UX designnot Asyncapi
  • Prototypingnot Asyncapi
  • Design systemsnot Asyncapi
  • Developer handoffnot Asyncapi
  • Open source projectsnot 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

Penpot

  • Smaller user base and community compared to Figma means fewer templates and resources
  • Self-hosting requires Linux server and Docker knowledge for technical setup
  • Real-time collaboration features may have performance issues with very large design files

Pricing, plan by plan

Asyncapi

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

Penpot

Free
  • FreeFree
    • Cloud-based design
    • Real-time collaboration
    • Components and variants
  • Unlimited$7/month
    • All free features
    • Priority support
    • Advanced cloud features
  • Enterprise$950/month
    • Custom enterprise features
    • Dedicated support
    • Advanced security

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 Penpot if

  • You need vector editing.
  • You want to start without paying.
  • You work on Web, Windows, macOS, Linux.
  • You also want interactive prototyping.
Penpot review

Questions people ask

Is Asyncapi or Penpot better?
Neither clearly leads. Asyncapi starts at Free and Penpot at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Asyncapi or Penpot?
Asyncapi starts at Free and Penpot at Free.
Does Asyncapi or Penpot run on more platforms?
Asyncapi runs on Web, CLI, IDE Extensions. Penpot runs on Web, Windows, macOS, Linux.
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 Penpot is typically brought in for.
What can Asyncapi do that Penpot cannot?
Asyncapi covers API Specification, Code generation, Documentation, Multiple messaging protocols. Penpot covers Vector editing, Interactive prototyping, Design systems, Components & libraries.

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
Penpot: Is Penpot really free?

Yes. Penpot is completely free with no feature gates. The open-source version can be self-hosted on your own infrastructure for zero cost beyond server expenses.

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
Penpot: Can I self-host Penpot?

Yes. Penpot can be self-hosted on your own infrastructure with no licensing costs. Organizations with specific privacy or governance needs can run Penpot on their own servers.

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
Penpot: What are the paid plans if I use Penpot cloud?

Penpot's cloud service offers a free tier, Unlimited plan at $7 per user per month for professionals and medium teams, and Enterprise starting at $950 per month for larger organizations.

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
Penpot: What platforms does Penpot support?

Penpot runs in the browser, so it works on Windows, Mac, Linux, and any OS with a web browser. No platform-specific downloads required.

Source
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