This is incomplete, but my basic understanding is as follows. Servo is an experimental web browser in Rust. WebRender was an experiment inside an experiment,

This is incomplete, but my basic understanding is as follows. Servo is an experimental web browser in Rust. WebRender was an experiment inside an experiment, to use a GPU pipeline closer to what a video game does and do painting very quickly. See a previous HN discussion: https://news.ycombinator.com/item?id=11175258 https://news.ycombinator.com/item?id=11175258 WebRender 2 I'm less familiar with, but it's a continuation on that work. I gather it cuts down on the amount of painting done, so now it does painting fast, and does less of it. I gather it should also enable some new features, like subpixel antialiasing.