Names of Browser Engines
Browser
Engine
ECMAScript Engine
Firefox, Mozilla
Gecko
SpiderMonkey
Internet Explorer 4…7
Trident
jscript
Mac IE 5
Tasman
jscript
Opera 7…9.2
Presto
linear_b
Opera 9.5
Presto Core 2
futhark
Konqueror
KHTML
KJS
Safari
WebKit
JavaScriptCore
The script engine of Mac IE 5 is a port of the engine that is used in Windows IE although the layout engines are different.
WebKit and JavaScriptCore are forks of KHTML and KJS.