SWFTools is an open source software tool suite for creating and manipulating SWF files. Distributed under the terms of the GNU General Public License, it may be compiled from C source, to run under Linux, Microsoft Windows, and Apple OS X. On Microsoft Windows systems, the pre-compiled installer also installs a GUI wrapper for the suite's PDF to SWF conversion tool, pdf2swf.SWFTools relies upon, and links against, additional third-party libraries for some of its functionality, e.g.