It's actually pretty easy to compile ... even I did it, lol. Just check it through SVN as part of the website source code , and from there it is just a matter of your options at compile time, which will determine how portable it is ... you can make it a standalone binary file to run javascript against or include headers, etc. . into your project - for the built-in magic of JS. It's one thing if you don't want the entire source Webkit tree to be huge, you can just download the JavascriptCore part. To you .. There are some interesting things in the rest of the WK tree, though.