Awesome Retool Custom Components: Community Repo & Examples

If you've been searching for Retool custom components examples, you already know the problem: Retool's native component library is solid, but the moment a client asks for something slightly off-script — a custom chart, a drag-and-drop interface, a specialised input — you're on your own. There's no central registry, no community marketplace, no npm for Retool components. Until now, sort of. A developer on r/Retool just open-sourced an awesome-retool-components repo on GitHub, and it's worth bookmarking.

What Is the Awesome Retool Components Repo?

It's a community-maintained GitHub repository modelled after the popular "awesome list" format — a curated collection of custom Retool components, experiments, and examples built by developers in the wild. The goal is simple: give the Retool community a single place to share and discover components that go beyond what ships out of the box.

It's open to contributions. If you've shipped a custom component — even a small proof of concept — you can open a pull request and add it. The repo is early, which means right now is actually the best time to get involved before it gets noisy.

Why Do Retool Custom Components Matter?

Retool's drag-and-drop builder covers 80% of internal tool use cases well. But the remaining 20% is where agencies and power users live. Custom components in Retool let you drop in any React-based UI — or really any JavaScript — as a self-contained, sandboxed iframe that communicates with the rest of your Retool app via a defined model.

Common reasons teams reach for custom components:

• Rendering a third-party React library (e.g. a rich Gantt chart, a signature pad, a colour picker)
• Highly specific UI interactions that native components can't replicate
• Embedding existing internal frontend code directly into a Retool app
• Working around styling or layout constraints in the native builder

The trade-off is complexity. Custom components require writing and maintaining code, and until a repo like this exists, every team reinvents the wheel in isolation.

How Do Retool Custom Components Actually Work?

If you've never built one, here's the mental model. A Custom Component in Retool is essentially a sandboxed iframe. You write HTML, CSS, and JavaScript inside it, and Retool gives you a bridge — Retool.modelUpdate() and window.Retool.on() — to pass data in and out.

Here's a minimal working example that renders a custom button and fires a Retool event when clicked:

<!-- HTML panel -->
<button id="myBtn">Click me</button>

<script>
  // Listen for model changes from Retool
  window.Retool.on(function(model) {
    document.getElementById('myBtn').innerText = model.label || 'Click me';
  });

  // Send data back to Retool
  document.getElementById('myBtn').addEventListener('click', function() {
    window.Retool.modelUpdate({ clicked: true });
  });
</script>

From there, you can reference customComponent1.model.clicked anywhere in your Retool app, trigger queries off it, or wire it into event handlers. The component is isolated — it can't break your app — but it's fully integrated into the Retool data layer.

Step-by-Step: How to Add a Custom Component in Retool

1. Open your Retool app in the editor and drag a Custom Component from the component panel onto the canvas.
2. Click "Edit code" to open the component code editor. You'll see three tabs: HTML, CSS, and JS.
3. Define your model in the right-hand panel under "Model". This is the initial state object your component receives — think of it like props.
4. Write your component logic using window.Retool.on() to receive model updates and window.Retool.modelUpdate() to push changes back.
5. Load external libraries if needed by adding a <script> tag pointing to a CDN URL in the HTML panel. Retool's sandbox allows this.
6. Wire it up: reference your component's model values elsewhere in the app using dot notation, e.g. customComponent1.model.value.

The whole cycle — idea to working component — can take under an hour once you've done it once. The hard part is usually the first time.

What Should Be in a Community Component Library?

This is where the awesome-retool-components repo has real potential. The most useful contributions would be components that solve specific, recurring pain points:

• A rich text editor using something like Quill or TipTap
• A signature capture pad for approval workflows
• A Kanban board with drag-and-drop card support
• A multi-step form wizard with validation state
• A custom file preview component for PDFs or images
• A D3.js chart for visualisations Retool's native charts can't handle

Each of these gets requested in client projects constantly. Having a reference implementation to start from — even if you have to adapt it — is a significant time-saver.

How to Contribute to the Repo

The repo is open for contributions via pull request. If you've built a custom Retool component that others might find useful, the format is simple: add a link, a short description, and ideally a screenshot or code snippet. The maintainer has kept the barrier to entry low on purpose.

If you're new to custom components and want to start somewhere, the comment on the original Reddit thread says it best: it's daunting at first, but once you start, the possibilities open up fast. Building your first component and contributing it back is a solid way to learn the API end-to-end.

The Bottom Line

The awesome-retool-components repo won't replace official docs, but it fills a gap that official docs never will: real components built by developers solving real problems. Bookmark it, contribute to it, and check back as it grows. If you're building internal tools on Retool at any real scale, community resources like this are how you stop rebuilding the same components for every client.