GovHack 2015 at the Australian National University in Canberra. Entries closed a few minutes ago and some of the tams are showing off the applications they built to use open access government data. Patentstori.es showed their system to "Explore the history of Australian innovation" using data from the patent office. Disastermaster.me "... maps the location of all disasters related to Australians since the early 1800's". AuStat generates quiz questions about Australia.
Mathew Purcell, noted computer educator, and his class of Computing and Code Cadets from Canberra Grammar School, recreated the whole of Canberra in the Minecraft game using geospatial data. They also produced Explore CBR to map the locations of public facilities in Canberra.
Crashstory.com is a "platform to research and annotate road accidents, developing them into narratives for the purposes of reflection and providing increased awareness of road safety".
There is a list of all the project from GovHack 2015 available.