See also BitTorrentTrackers and MusicDaily.
TorrentHistory also tracks torrents on the mainline DHT, indexing the torrents, info hashes, and the associated files. The site does not post full info hashes.
BitTorrent v2
Reddit: Is anyone else excited about per-file hashes in Bittorrent v2?
BitTorrent v2 libtorrent support announcement
Bencode
bencode online displays torrents (bencoded files) as a JSON representation, lets you modify, and export as a torrent file again.
DHT search engines
BTDig.com (née BTDigg) is a DHT search engine, indexing mainline DHT torrents and the files they contain.
SolidTorrents, Bitsearch, and BT4G both seem to have the same backend. BT4G has a nice, minimal design.
