api-viewer-element VS catalyst

Compare api-viewer-element vs catalyst and see what are their differences.

api-viewer-element

API documentation and live playground for Web Components. Based on Custom Elements Manifest format (by open-wc)

catalyst

Catalyst is a set of patterns and techniques for developing components within a complex application. (by github)
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api-viewer-element catalyst
2 9
280 1,394
0.0% 0.3%
5.6 2.6
3 months ago 27 days ago
TypeScript TypeScript
MIT License MIT License
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.

api-viewer-element

Posts with mentions or reviews of api-viewer-element. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2022-12-20.

catalyst

Posts with mentions or reviews of catalyst. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2025-08-05.
  • Why is GitHub UI getting so much slower?
    4 projects | news.ycombinator.com | 5 Aug 2025
    > Web components are low-level APIs and just don't have the ergonomics of frameworks without a library to help. For a few elements built by a few true believers, this is ok, but when you scale it out to every component in a complex app with company-wide teams you need the ergonomics and consistency-setting of a declarative and reactive API.

    GitHub did have their own declarative semi-reactice webcomponent framework. It's pretty nice!

    https://github.github.io/catalyst/

    It not at all coincidentally bears some resemblance to the (thinner, simpler) Invoker Commands API that has shipped in HTML (they share a main author):

    https://open-ui.org/components/invokers.explainer/

  • The Invokers Are Coming
    1 project | news.ycombinator.com | 11 Nov 2023
    Reminds me of GitHub catalyst web component framework, which has targets & actions. https://github.com/github/catalyst

      
  • Node-Secure v0.9.0
    3 projects | dev.to | 7 Dec 2021
    Working on the next Web UI (TypeScript + Catalyst).
  • Introducing: Custom Elements Manifest
    14 projects | dev.to | 17 Jun 2021
    Catalyst (opt-in via CLI flag)
  • Why jQuery should be more appreciated
    4 projects | /r/programming | 10 May 2021
    They actually use a web component system, with a library called Catalyst used to make things a bit easier. They aren't simply doing raw DOM manipulation in Vanilla JavaScript, they're using components and what is essentially a fairly lightweight framework.
  • GitHub's Web Component Collection
    5 projects | news.ycombinator.com | 12 Mar 2021
    Personally, I'd really like to see the unmolested, with-dependencies versions[1].

    This version is VERY easy to ship and adopt. But in my mind, these components hide how the sausage is made! Many were built with a library (Catalyst[2]), but the tools were obfuscated out in these end products.

    There's a huge amount to be said for these web components. We need more models like this. But I also think there's an opportunity lost here, to teach, to inform, to help others learn how to build components, using the tech Github actually used to develop them.

    [1] https://news.ycombinator.com/item?id=26439167

    [2] https://github.com/github/catalyst

  • new @attr decorator for class fields | Github/Catalyst#103
    1 project | /r/WebComponents | 9 Mar 2021
  • Getting Up & Running with GitHub Catalyst
    1 project | dev.to | 18 Feb 2021
    GitHub Catalyst is a library that makes it easier to develop Web Components.
  • Project Lightspeed: A self-contained, sub-second, open source live stream platform
    1 project | /r/WebRTC | 4 Jan 2021
    The only real escape is using something like /r/webcomponents. I did some playing around with Github's new Catalyst framework over the holidays, quite enjoyed it. But you'd be one of the only people on the planet using it. Stick with whatever works for you.

What are some alternatives?

When comparing api-viewer-element and catalyst you can also consider the following projects:

webcomponents - Web Components specifications [Moved to: https://github.com/WICG/webcomponents]

core - A toolchain for building scalable, enterprise-ready component systems on top of TypeScript and Web Component standards. Stencil components can be distributed natively to React, Angular, Vue, and traditional web developers from a single, framework-agnostic codebase.

elm-get

cli - JavaScript security CLI that allow you to deeply analyze the dependency tree of a given package or local Node.js project.

gem-panel - A custom element <gem-panel>, let you easily create layout similar to Adobe After Effects.

InfluxDB – Built for High-Performance Time Series Workloads
InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com
featured
Sevalla - Deploy and host your apps and databases, now with $50 credit!
Sevalla is the PaaS you have been looking for! Advanced deployment pipelines, usage-based pricing, preview apps, templates, human support by developers, and much more!
sevalla.com
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