The
r/piracy megathread appears to be OK, and has links to a lot of different torrent sites. TPB.party is one proxy that has been up since TPB did go down, but as the megathread does point out software can't really be trusted from TPB anymore, as there are a lot of different accounts uploading viruses for almost every single search term. I mean you'll probably be OK not downloading obvious viruses, but it just goes to show the complete lack of moderation apparent on the site now.
f/piracy has basically the same thing as well, and it's supported by some of the same mods from r/piracy. Raddle.me bills itself as an "anarchist" reddit.