Very rich and easy to use! I'm not affiliated; I just discovered it and wanted to share. It uses websockets and has built-in authentication with Home Assistant.
Here's a demo https://shannonhochkins.github.io/ha-component-kit/iframe.ht...
Great documentation available here: https://shannonhochkins.github.io/ha-component-kit/?path=/do...
I had never heard of it before, but I hope it gains a lot more traction!
