> The thing with Servo is that it's highly modularized and some of its components are widely used by the larger Rust ecosystem, even it the whole browser engine isn't.

Alas not nearly as modularized as it could be. I think it's mainly just Stylo and WebRender (the components that got pulled into Firefox), and html5ever (the HTML parser) that are externally consumable.

Text and layout support are two things that could easily be ecosystem modules but aren't seemingly (from my perspective) because the ambition to be modular has been lost.

I've seen recent talk about swappable js engine, so I'm unsure about the ambition being lost. I'm eyeing Blitz too (actually tried to use it in one of my projects but the deps fucked me up).