Wednesday, December 10, 2025

many, many JavaScript engines

the "most popular" prog. language has HUNDREDS of engines "able" to run it
(like many people "able" to use English...)

JavaScript engines zoo sorted by lines of code

JavaScript engines zoo sorted by % of ES6 coverage

smallest, in TypeScript

javascript-zoo/engines/bramblex-jsjs.md at master · ivankra/javascript-zoo

and actually usable one in TypeScript

javascript-zoo/engines/eval5.md at master · ivankra/javascript-zoo

biggest, and most used (V8) in C++ JavaScript engine of Chrome, Node.js etc

javascript-zoo/engines/v8.md at master · ivankra/javascript-zoo

"newest", in Rust

Hans-Halverson/brimstone: New JavaScript engine written in Rust

in GoLang, small and good % coverage, compiles to WASM

javascript-zoo/engines/fastschema-qjs.md at master · ivankra/javascript-zoo