generator VS spec

Compare generator vs spec and see what are their differences.


Use your AsyncAPI definition to generate literally anything. Markdown documentation, Node.js code, HTML documentation, anything! (by asyncapi)


CloudEvents Specification (by cloudevents)
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generator spec
4 25
565 3,948
5.0% 3.2%
9.1 7.2
4 days ago 7 days ago
JavaScript Python
Apache License 2.0 Apache License 2.0
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.


Posts with mentions or reviews of generator. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-02-16.
  • What is AsyncAPI?
    5 projects | | 16 Feb 2022
    AsyncAPI Generator
  • An introduction to the AsyncAPI specification
    4 projects | | 31 Jan 2022
    With the file created, we can now generate more friendly documentation. For this, we need to install generator or use it in its Docker version.
  • Getting Started with CloudEvents and AsyncAPI
    8 projects | | 16 Sep 2021
    This can be improved and extended overtime, especially because of the way the generator is designed, enabling extensibility so we can have templates for many other languages that support more protocols, etc. For example, there is only a NATS generator for .NET Core... but perhaps in the future there could be more protocols supported for .NET Core and examples built for Azure 😃.
  • How to contribute to OSS AsyncAPI Initiative 🌈
    7 projects | | 9 Sep 2021
    Continue improvements and add new features to core tools such as our spec parser/validator and code generator.


Posts with mentions or reviews of spec. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-01-25.
  • Show HN: Automatisch – open-source workflow automation, an alternative to Zapier
    8 projects | | 25 Jan 2023
    CloudEvents is trying to standardize on the messaging

  • FLiP Stack Weekly for 21 Jan 2023
    19 projects | | 23 Jan 2023
  • A message queue focus on serverless program
    2 projects | | 29 Nov 2022
    Hello guys, actually, vanus can directly deliver messages to OpenFaaS without this kind of connector. Because vanus can deliver messages that follow the CloudEvents standard, OpenFaaS can also receive such messages. More details
  • An alternative look at workflows in cloud era
    3 projects | | 3 Jul 2022
    Lastly, workflow as a function flow in Automatiko is also based on Funqy, but this time it leverages Knative project to build function chaining based on events (Cloud Events). Knative is a kubernetes based platform to deploy and manage modern serverless workloads. In particular, Knative eventing comes with universal subscription, delivery and management of events that allows to build modern applications by attaching business logic on top of the data stream - the events.
  • Google Cloud Functions 2nd gen
    2 projects | | 4 Apr 2022
    One of the most exciting 2nd gen functionality is the ability to create functions of Cloud Events type. These are event functions that, instead of receiving an event in a proprietary Google Cloud format, will receive one in a standard format as described in the Cloud Events specification.
  • GraphQL for Event Driven Architecture
    2 projects | | 6 Feb 2022
    Curious why you decided to go for GraphQL instead of something like Cloud Events spec (
  • What's your experience with event driven?
    2 projects | | 10 Jan 2022
    There is also but I have never used it.
  • Getting Started with CloudEvents and AsyncAPI
    8 projects | | 16 Sep 2021
    There are a few extensions worth mentioning, one of them is for distributed tracing. However, it seems there is some discussion around removing this extension from the spec (check this PR on GitHub). There are open issues on some SDKs to support it, and others have already made changes to remove it. The future isn't clear, but I'd argue it's interesting to follow this closely for any updates, since tracing events is very important in an event-driven architecture.
  • A streaming/communication platform for the data mesh (proof-of-value)
    3 projects | | 8 Jul 2021
    Note: We won't dig into partitioning problems in this article, nor will we use the partitioning extension of the Cloudevents specification. To continue the coding journey, you can refer to this implementation of a Kafka connect that publishes a "Cloudevent" into a topic.
    3 projects | | 8 Jul 2021
    Once again, it is the role of the “federated computational governance” to define the envelope format and standards. Cloudevents is one of those. It standardizes the exchange of messages between the cloud services.

What are some alternatives?

When comparing generator and spec you can also consider the following projects:

keptn - Cloud-native application life-cycle orchestration. Keptn automates your SLO-driven multi-stage delivery and operations & remediation of your applications.

asyncapi-to-postman - Creates a Postman collection from an AsyncAPI file.

cupid - A library that focuses on finding and analyzing the relationships between AsyncAPI documents. It outputs a map of the system architecture. Except for a default map, it is possible to get output as mermaid.js flow diagram, PlantUML class diagram and more to come.

nodejs-ws-template - Node.js WebSockets template for the AsyncAPI Generator

specification - Serverless Workflow Specification

parser-js - AsyncAPI parser for Javascript (browser-compatible too).

youtube-websub-subscription-handler - This is a WebSub subscription handler for YouTube video feed update | YouTube 비디오 피드 업데이트를 WebSub 기능을 이용해 받아 처리합니다

blackbox_exporter - Blackbox prober exporter

PubSubHubbub - The PubSubHubbub protocol specification.

k8s-event-grid-bridge - A simple event bridge for Kubernetes native events to Azure Event Grid.