Turbo is an incremental bundler and build system optimized for JavaScript and TypeScript, written in Rust.

Create complex, reactive, persistent web applications by just writing HTML & CSS, without a single line of JavaScript and no server backend. Developed in the Haystack Group at MIT CSAIL and led by Lea Verou.

Sal (Scroll Animation Library) is written with aim to provide performant and lightweight solution for animating elements on scroll. It's based on the Intersection Observer, which gives amazing performance in terms of checking the element's presence in viewport.