This is a page of links to Australian databases, directories, inventories and other useful resources:

Integrated Botanical Information System: Botanical Name Portal, a "one-stop-shop linking to a range of botanical databases".
Australian Plant Name Index - APNI, "a list of all published names of Australian vascular plants and their bibliographic and typification details."
What's Its Name, "a concise database of plant names & name changes for Australia".
Australian plant common name database: "This sources the 'Common Name Database' of the Australian National Botanic Gardens."
Flora of Australia Online: "This data is derived from the taxonomic treatments of ABRS"
Species Bank, "provides simple, reliable information about a variety of Australian species."
FloraBase - The Western Australian Flora, "a state-wide electronic flora".
Species Profile and Threats Database (SPRAT), "designed to provide information about species and ecological communities listed under the Environment Protection and Biodiversity Conservation Act 1999."
List of Registered Cultivars derived from Australian native flora "with links to their descriptions and photographs".
Plant Breeders Rights - Database Search: "Searchable database for all PBR varieties."
Kew Herbarium Catalogue - "This site provides access to those specimen records and images available digitally through the Herbarium Catalogue."

Australian Faunal Directory (AFD) "is being compiled as a public enquiry database and will serve as a source of taxonomic and biological information on all animal species known to occur in Australia."
Fish Names database: "The Australian Fish Names List was created... so that an Australian Fish Names Standard could be established to meet both the seafood industry and consumers expectations for safe food, fair-trading and truth in labelling."
Australian Bee Database

IUCN Red List
NatureServe Explorer: includes NatureServe (i.e. TNC) status
CITES species database
Species Profile and Threats Database (SPRAT), "designed to provide information about species and ecological communities listed under the Environment Protection and Biodiversity Conservation Act 1999."

Geoscience Australia: Place Names of Australia, "uses information from the Gazetteer of Australia 2004 Release."
VICNAMES, "holds more than 190,000 road and place names including landscape features such as mountains and rivers, bounded localities such as suburbs, towns, cities and regions, and physical infrastructure such as roads, reserves and schools."

Heritage Council of Western Australia: Places Database: "Here you can find details of places considered to have cultural heritage significance to Western Australia"
Australian Heritage Database, "more than 13 000 places of natural, historic and indigenous significance"
Australian Heritage Places Inventory "contains summary information about places listed in State, Territory and Commonwealth Heritage Registers."
Aboriginal Heritage Inquiry System "gives users the ability to spatially search for sites and surveys within an area of interest."

Karst Index Database "is a searchable database of approximately 6,500 cave and karst features throughout Australia.... The database does not contain cave location information."

Western Australian Shipwrecks Database, "gives out information on Western Australian shipwrecks."
Australian National Shipwreck Database "includes all known shipwrecks in Australian waters."
Emergency Management Australia Disasters Database: "the primary Australian Government database containing records of all natural and non-natural disasters within Australia (where information is available) dating from the earliest records (1622 shipwreck) to the present day."

Collaborative Australian Protected Areas Database (CAPAD), "a database containing information on all protected areas in Australia"

Australian Wetlands Database, "find information on Australia's Ramsar sites, wetlands of international importance listed under the Ramsar Convention, and the nationally important wetlands listed in A Directory of Important Wetlands in Australia."

Australian Stratigraphic Units Database, "To provide the primary national standard for geological names in Australia"

PictureAustralia: "Search for people, places and events in the collections of libraries, museums, galleries, archives, universities and other cultural agencies, in Australia and abroad - all at the same time."

ASIC Company Name Search: "Find basic details about current & former companies, business names, schemes, trusts & non-registered entities"
ATMOSS: Australian Trade Mark Online Search System: "Trade mark applicants are able to search for similar trade marks, basic trade mark details and an image of the trade mark if applicable."
Parliament of Australia: Parliamentary Library: Law Internet Resources