The following is a list of JavaScript engines.
- DMDScript
- FESI A Free EcmaScript Interpreter implemented in Java Platform
- JavaScriptCore — derived from KJS, for Safari
- KJS — the engine used in Konqueror
- Narcissus — JavaScript implemented in JavaScript, used on top of SpiderMonkey.
- NGS
- NJS — a successor of NGS
- Rhino — one of several JavaScript engines from Mozilla, using the Java Platform
- SEE — Simple ECMAScript Engine
- SpiderMonkey — JavaScript engine in Mozilla Gecko applications, including Firefox
- JSDB, Javascript for Databases, a javascript interpreter supporting a lot of libraries based on SpiderMonkey.
- Tamarin — an ActionScript and ECMAScript JIT engine.