SeedPeer is described as 'started out as a small torrent site a few years ago, our main objective was to keep the site clean, fast and reliable. After a year of solo administration we gained a few more administrators and developers' and is an website in the file sharing category. There are more than 10 alternatives to SeedPeer, not only websites but also apps for Windows and Tor. The best alternative is The Pirate Bay, which is free. Other great sites and apps similar to SeedPeer are 1337X, RARBG, LimeTorrents and Torrends.to.
SeedPeer alternatives are mainly Torrent Search Engines but may also be Torrent Trackers. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of SeedPeer.