You may be familiar with dat.GUI from the THREE.js documentation, for example pages like this:
https://threejs.org/docs/index.html#api/en/geometries/BoxGeometry
This component dynamically creates a dat.GUI panel to view and adjust the properties of all components on an A-Frame entity, like this:

There are some limitations (see below), but for the most part, this should just work for any A-Frame entity & component. It is a bit like A-Frame inspector, but doesn’t require pausing the scene, and allows you to focus on just a few specific entities.
This component currently has no schema.
In future we may offer a schema to filter in/out specific components/properties, or control the appearance of the dat.GUI panel.
Via CDN
<script src="https://cdn.jsdelivr.net/npm/aframe-dat-gui@0.0.3/dist/dat-gui.min.js"></script>
Or via npm
npm install aframe-dat-gui
Just add the dat-gui component to any entity, to display an entity’s components and settings.
For example, this…
<a-torus color="red" dat-gui></a-torus>
… will result in a panel like this appearing in the top right of the screen.

You can add the dat-gui component to multiple entities in the scene, and each will appear as a collapsible folder in the dat.GUI panel.
At this point, there are quite a few limitations. Requests, feedback and PRs are welcome.
dat-gui component checks which components and properties exist when it is initialized. It doesn’t check again. You can force a refresh by removing and re-adding the component, but there’s no auto-refresh, and no way to refresh through the UI yet.material properties associated with different shaders.dat.GUI panel. Some of this can probably be done using CSS, but I haven’t looked at how to best do that yet.Close controls button is awkwardly placed, often blocking one of the properties. Seems like a dat.GUI bug, but perhaps I’m doing something wrong here…dat.GUI in VR in the past, see here and here, but nothing alive at the moment.dat.GUI control panel for entities dynamically when selected with a mouse pointer (using raycasting/cursor). This would be a nice example/demo to build, but I didn’t get to it yet.Also more examples in the \tests\ folder.