V8 is Google's open source JavaScript engine.

V8 is written in C++ and is used in Google Chrome, the open source browser from
Google.

V8 implements ECMAScript as specified in ECMA-262, 5th edition, and runs on
Windows (XP or newer), Mac OS X (10.5 or newer), and Linux systems that use
IA-32, x64, or ARM processors.

V8 can run standalone, or can be embedded into any C++ application.

Git repository at https://github.com/v8/v8

WWW: http://code.google.com/p/v8/