KTorrent

KTorrent is a BitTorrent client that is part of the KDE Gear.

Features
KTorrent is often received as a client intended to be feature rich. Features include:
 * Upload and download speed capping / throttling & scheduling
 * Internet searching with torrent search engines.
 * Support for UDP trackers.
 * IP address blocklist plugin
 * Port forwarding with UPnP (Universal Plug and Play)
 * Protocol encryption
 * DHT (mainline version), and support for trackerless torrents
 * μTorrent peer exchange (PEX) support
 * File Prioritization
 * Ability to import partially downloaded files
 * Directory scanner to automatically watch directories for new torrents
 * Manual addition of trackers to torrents
 * RSS feed support
 * Web interface plugin with default port number 8080
 * IPv6 support
 * SOCKS v4 and v5 support
 * μTP support
 * Generation and parsing of magnet links
 * UDP tracker scraping
 * Enhanced usability of the queue manager
 * Super-seeding support
 * Streaming of video while downloading