torrent-file-editor - GUI tool for creating and editing .torrent files

Cross-platform Qt application intended to create and edit .torrent and
uTorrent .dat files. Replacement for BEncode Editor with modern design
and extra features.

Can also be used on command-line to convert .torrent files to and from
JSON format.

BEncode Editor: https://sites.google.com/site/ultimasites/bencode-editor