We have a Kiwix server at home for offline reference, and with NetBSD on an old iMac it's blazingly fast compared to Raspbian on a Raspberry Pi Model B.
The internet here is slow, and I think Kiwix rate limits direct downloads. I'd like to set up torrenting to make the download for Wikipedia take less than an estimated 3 days, and so that peers can do the same. Even scp-ing what I have from another node seems it will take a while, so I just have Wiktionary at the moment.
I see a handful of CLI BitTorrent clients packaged for NetBSD: btget, dtorrent, btpd, rtorrent, transmission.
I have experience only with transmission, though if there's a "better" stable, small package, I'd prefer learning a second option.
I will look into these myself in the meantime, but I'm posting here if anyone has experience or opinions, I would love to hear them, and posting here to share a NetBSD project.