Boa is an experimental JavaScript engine written in Rust that supports over 90% of the latest ECMAScript specification. It includes a lexer, parser, and interpreter, and offers various crates for different functionalities. Users can run JavaScript code via a CLI or in a WebAssembly environment.

Nova is a JavaScript and WebAssembly engine developed in Rust, currently serving as an experimental project to explore its capabilities. Although it only passes about 77% of the test262 suite, ongoing development aims to enhance its functionality. Interested individuals can engage with the project through its GitHub repository or Discord server.