Mstachowiak 

Apple has released the source to JavaScriptCore, a JavaScript framework based on kjs. It will be used by various applications in upcoming Mac OS X releases. "JavaScriptCore is a private API which may be used by future Mac OS X
applications such as Sherlock, and is provided as Open Source as part
of our partnership with the KDE community. JavaScriptCore will be used
by Sherlock in an upcoming O/S release, and possibly by other Apple
software in the future. Apple chose kjs as the basis of its JavaScript
technology for its simple and efficient code." The full announcement is here. Read More