Is anyone aware of any FOSS browser replacement projects? Being a "full stack dev" (feels like a false skill set most of the time) I'm at this point where there are easily enough of us who have struggled with implementing web apps in the various frameworks and tools that essentially all boil down to JavaScript, HTML and CSS.

There's nothing wrong with them individually, but with modern languages and hardware we should be able to make something better. At least in a way to encourage adoption of something better, and I want to contribute to it.