Hi, all! Nicolas Martin once released a PHP5-based JS packer (http:// joliclic.free.fr/php/javascript-packer/en/), a port of Dean Edwards' packer code (http://dean.edwards.name/packer/).
Here is a derivative of Nicolas' code: http://wanderinghorse.net/computing/javascript/#packers that version extends the original by allowing input from stdin and output to stdout (the original one required passing two file names, which is not "The Unix Way"). Assuming you're in a Unix-like environment, it can be used like this: php packer.php infile outfile php packer.php infile > outfile php packer.php < infile > outfile This packer appears to pack about well as the one in the jQ build tree does (but that one always fails for me when run outside the context of build.xml, with an error about "0.0" having some null property). Happy hacking!