Torrent File Editor - Qt based GUI tool designed to create and edit .torrent files.
qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
dottorrent-gui - An advanced GUI torrent file creator with batch functionality, powered by PyQt and dottorrent.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
Koinonein BitTorrent Client - A fast and modern BitTorrent Client.
BitTorrent - BitTorrent is a peer-to-peer program developed by Bram Cohen and BitTorrent, Inc.