Torrents.me is a meta search engine for torretns.
Limetorrents.cc is a clean database with millions of torrents. They try to avoid porn torrents as much as possible, the same applies to the many sex ads that you encounter on many other torrent sites.
In 2015, the very popular release group EZTV (released almost all TV series) had a hostile take over. This new group releases its torrents on EZTV.ag. On other sites these releases are mostly banned.
1337x has a completely new design and continues to grow, this year at number 3 in the list of most popular torrent sites.
RARBG started out as a Bulgarian tracker. You also encounter the many RARBG releases on other torrent sites. Already online since 2008, but only popular since 2015 .
1. The Pirate Bay
The legendary thePiratebay has been shut down many times but keeps coming back, now even on the original .org domain. But there are also dozens of backups.