It is definitely an interesting topic, though for a specific reason:

If you landed on this page looking for a direct “AUSkey download link,” that file no longer exists in an official capacity. Please proceed with myGovID setup above.

For years, AUSkey was the standard for Australian businesses interacting with government portals (like the ATO, ASIC, and Australian Business Register). It used a complex system of downloaded software and browser plugins.

Attempting to download AUSkey from third-party sites is — those files are outdated, unsupported, and may pose security risks.

For those who managed business access.

AUSkey was a secure digital certificate, acting as an electronic key, that allowed businesses and tax agents to log in to participating government online services. It was used to identify an individual or a representative of a business without needing multiple passwords.