Yes, there are relays to connect the clients together and then the transfer is direct.

Several years ago when I was doing consulting I had lots of clients that blocked all the normal file sharing domains to prevent people from getting files into servers but magic wormhole always worked for me. I’d stash a wormhole-william (magic wormhole compatible Go application) executable in our installer deliverable and then I could update the software without IT’s help in the future (I often had RDP access). The headaches saved by cutting red tape were worth the risk for me.

We run this at work so we have forever copies of image tags and to reduce dockerhub rate limit issues. Works well even for a large dev team.

I ran a 1650 super for a while. At idle it added about 10W and would draw 30-40W while transcoding. I ended up taking it out because the increased power wasn’t worth the slight performance increase for me.

Memos fits a wide variety of uses and is the first note system that has clicked for me. I use it for quick notes so I don’t forget things, journal-like entries, save for later (like Pocket), shopping lists and other todos.

I started self hosting many years ago when the company I worked for got new workstations and sold the old ones for next to nothing. It was a very powerful machine but I payed the price every month in electricity. I am now running a bunch of services on 2 mini pcs (each was about $250 USD) with laptop cpus and my electricity usage is way down (like 45 watts for both machines, router, and switch).

There will be a steep learning curve, but I highly recommend learning docker (especially docker compose) and how to setup a reverse proxy. The self hosted communities are very helpful and can answer more specific questions as they come up.