Geolizer - Generates geographical information in Webalizer reports about site visitors by using the GPL'd GeoIP library from MaxMind. - http://sysd.org/stas/node/10
Autonmous System Number ASN Patch for The Webalizer - This patch adds the AS number (origin) lookup feature to the Webalizer. With documentation, demo and download area. - http://www.init7.net/webalizer_asn/
CGI Front End - Web interface to generate and view a new report immediately. - http://rtcomponents.com/Software/CGI/Webalizer/
Zeus - Patch to read the binary log files produced by the Zeus web server. - http://support.zeus.com/products/v4/webalizer.html