Swfmill is a tool to process Shockwave Flash(TM) (SWF) files. It can convert SWF from and to an XML-dialect called swfml, which is closely modeled after the SWF file format.

Apart from this xml2swf and swf2xml functionality, it also provides a libxslt-based XSL transformator that supports an extension ("swft") which helps with generating IDs for SWF objects and can import an SWF as XML using an XPath command (swft:document()).

As a simple application of such functionality, swfmill can pack together a bunch of media files (currently JPGs, PNGs, TTFs and other SWFs) into an SWF as "library objects" for your attachMovie() pleasure.