There's a new browser engine dropped (a while ago, actually). It isn't based on #WebKit and it isn't based on #Firefox, it is written from scratch for a hobbyist operating system #SerenityOS by some awesome/crazy people. The browser, called #Ladybird, actually can be compiled for #Windows, #Linux, #macOS, #OpenIndiana and #Android.
It can pass Acid3 and render Github page well (note that Firefox and Chrome circa 2018 cannot do that!), and it has decent JS and afaik wasm support.
Their site is https://ladybird.dev/
I am not related to the project in any way, just amazed that it exist, and I think it deserves more love and publicity. And optimizations for low-end computers. And privacy features. And so on!