Having checked this, you can go and download OpenWFE : http://sourceforge.net/project/showfiles.php?group_id=54621

Download for example openwfe-1.6.2.tgz

Always make sure to download the latest version. Some versions are pre-releases they introduce bug fixes or new feature, seeing OpenWFE gently evolving into an even better solution.

You have the opportunity to download a source release. It includes the source code that got compiled into fellow releases.