How to get to a Nexus onion address on a Mac, the Gatekeeper prompts you will meet, and which macOS conveniences work against you here.
nexusb2l7fmqnefwphyy7m5zjhlkytlbo7qbb5lu5dlczr3azgii2gyd.onionnexusma2iqgauqqvjcgds4ckv5xbf272tkfagq4epojjhsgleqpwxiqd.onionnexusabcd6tyfhdwilyitaqiri6tisj2v2hueyjuj6qkvd6azvi5tuqd.onionA Mac gets you to the same place as any other desktop with slightly less friction and slightly more cloud. The friction is fine. The cloud is the part to think about.
On first launch macOS may say it cannot verify the developer. That is a statement about Apple notarisation and not about whether the download is genuine. Your own signature check answers that question properly and does not depend on Apple at all. Do the signature check, then allow the app.
Turn it on if it is not already. On a laptop that leaves the house this is the single highest value setting on the machine, and it costs nothing in daily use.
Amnesia. Like Windows, it remembers. Recent items, quick look thumbnails and the unified log all persist. If the goal is for the machine to know nothing afterwards, a live system is the tool for that, not a well configured Mac.
The full Windows route to a Nexus onion address, what the operating system keeps behind your back, and the settings worth changing before you start.
DesktopThe Linux route to a Nexus onion address, why the distribution package is usually the wrong choice, and what a sensible setup looks like.
MobileTor Browser for Android works and reaches Nexus onion addresses. Why a phone is still the weakest option and what to do if it is all you have.
Where to get Tor Browser, why the source matters more than the version, and the mistakes that put a modified copy on a machine.
The signature check that proves the file came from the Tor Project unmodified, why it is worth the ten minutes, and what a failure means.
Tor Browser ships on its most permissive setting. What the three levels change, why Safest is the right default here, and what breaks.