Although the last two are not up and running just yet but they are listed last to prompt me to get them going.

www.gpsaustralia.net
www.octapc.com.au
www.gpstechnologies.com.au
www.twonav.com.au
www.gpsaustralia.org
www.sandgroper.com.au
www.gpsaustraliamagazine.com
www.6056.net.au