Zaplib

It is an open-source library for speeding up web applications using Rust and WebAssembly. It lets you write high-performance code in Rust, alongside your existing JavaScript code. Its goal is to make it easy to build performance-intensive applications in the browser. While it is possible to make JavaScript run fast, over time it may become hard to manage lots of optimizations. In Rust you tend to need way fewer optimizations to get high levels of performance, so you can focus on actually building stuff.