Addition to other comments, (most of) Bevy's examples are both available in WebGL and WebGPU so useful for comparison. https://bevy.org/examples-webgpu/ + https://bevy.org/examples (WebGL)

I’d say this is one of the most impressive demos: https://github.com/ArthurBrussee/brush

Gaussian splatting training and rendering using webgpu

Most of the sites I’ve seen are indeed just demos. I especially like Compute Toys [0], a Shadertoy clone for WebGPU. [1] is probably the best place to find demos. I have a site myself in which I experiment mainly with WebGPU Compute Shaders [2].

[0] https://compute.toys/

[1] https://github.com/mikbry/awesome-webgpu

[2] https://github.com/s-macke/WebGPU-Lab

Some Unity demos:

1. https://boat-demo.cds.unity3d.com/

2. https://www.keijiro.tokyo/WebGPU-Test/

3. https://www.chatlord.com/4/

I found this quite impressive: https://huggingface.co/spaces/webml-community/kokoro-webgpu

It also works without WebGPU, just very slowly.

I have this toy I’ve enjoyed building immensely, for composing video effects.

https://vester.si/motion/

We've got this index of apps we're aware of, if you'd like to peruse: https://bugzilla.mozilla.org/show_bug.cgi?id=webgpu-apps

https://threejs.org/examples/?q=webgpu (with fallback to WebGL if WebGPU is not available)