The ARROW Discovery Service is an open-access repository of 162,063 Australian research outputs, including theses; preprints; postprints; journal articles; book chapters; music recordings and pictures. You will also find some theses from New Zealand universities, through the inclusion of the Australasian Digital Theses Program in ARROW.
The research repositories of NZ universities and polytechnics can be found within Kiwi Research Information Service, including The University of Auckland's own ResearchSpace.