V8
Googles JavaScript-engine. Lanserades med Chrome 2008. Driver också Node.js, Deno, Bun, Cloudflare Workers, Edge. Lars Bak (ex-Sun HotSpot) ledde initial design.
Skriven i C++. Tiered compilation: Ignition (interpreter) → SparkPlug (baseline JIT) → Maglev (mid-tier, 2023) → TurboFan (optimerande). Hidden classes-trick för snabb property access. WebAssembly-stöd (Liftoff baseline + TurboFan). Konkurrenter: SpiderMonkey (Firefox), JavaScriptCore (Safari). V8 har vunnit benchmark-krigen sedan ~2010.