dottorrent-gui - An advanced GUI torrent file creator with batch functionality, powered by PyQt and dottorrent.
Torrent File Editor - Qt based GUI tool designed to create and edit .torrent files.
qMakeTorrent - an advanced torrent file creator with batch functionality, powered by libtorrent-rasterbar
bittorrent tracker editor - will add/remove bittorrent tracker from the torrent file(s).
Bitford - BitTorrent client for Chrome that can stream videos while they're being downloaded
Android Torrent Client - Android Torrent Client. Open Source. GPLv3