While TOR is the recommended way to access the dark web, everyone and anyone can still visit without the same level of anonymity. I certainly would suggest using TOR always, however if you need to get to any .onion site from a computer without tor, you can do so by following this:
Open an internet browser (Edge, Firefox, Chrome, etc)
Type in the .onion site (ex. https://protonirockerxow.onion/rc/)
After the .onion portion of the address, add .dog (ex
Press Enter
You are now viewing RISEUP’s website on the darkweb, using a regular browser