This distribution includes a binary distribution of Mozilla Rhino 1.6 release 5 plus one patch. You can get the unpatched 1.6R5 release of Rhino from the following URL: ftp://ftp.mozilla.org/pub/mozilla.org/js/rhino1_6R5.zip To obtain the source code for the 1.6R5 release of Rhino, issue the following commands: cvs -d :pserver:anonymous@cvs-mirror.mozilla.org:/cvsroot \ co -D2006-11-20 mozilla/js/rhino The patch is available here: https://bugzilla.mozilla.org/attachment.cgi?id=288467 which is attached to this bug: https://bugzilla.mozilla.org/show_bug.cgi?id=367627 Rhino is licensed under both the MPL (Mozilla Public License) 1.1 and the GPL (GNU General Public License) 2.0, which are in the LICENSE.js.txt file.