Releases and trunk
There is no stable release of JSCSSP yet.
But the work-in-progress source is available at
JSCSSP is released under the tri-license MPL/GPL/LGPL
Portions of code's CSSScanner come from Gecko's nsCSSScanner. A few lines of JSCSSP are also adapted from Gecko's nsCSSParser. Both are Copyright 1998 Netscape Communications Corporation and used under the MPL.