TagSpaces - TagSpaces is an open source platform for personal data management. With TagSpaces you can manage and organize the files on your laptop, tablet or smart phone.
qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
allTags - allTags is a free, tag based file management application.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
Elyse - The free version allows up to 30 tags.
BitTorrent - BitTorrent is a peer-to-peer program developed by Bram Cohen and BitTorrent, Inc.