The qBittorrent project was started in March 2006 to create a lightweight but featureful BitTorrent client that would be multi-platform and very easy to use.
qBittorrent v2 is the closest open source (GNU GPL v2 license) equivalent to µtorrent. qBittorrent is based on Qt4 toolkit and libtorrent-rasterbar.
Features:
- Polished µTorrent-like User Interface
- Well-integrated and extensible Search Engine
- Simultaneous search in most famous BitTorrent search sites
- Per-category-specific search requests (e.g. Books, Music, Movies)
- All Bittorrent extensions
- DHT, Peer Exchange, Full encryption, Magnet URI, …
- Remote control through a Web user interface
- Nearly identical to the regular UI, all in Ajax
- Advanced control over trackers, peers and torrents
- Torrents queueing and prioritizing
- Torrent content selection and prioritizing
- UPnP / NAT-PMP port forwarding support
- Available in ~25 languages (Unicode support)
- µTorrent spoofing to bypass private trackers whitelisting
- Advanced RSS support with download filters (inc. regex)
- IP Filtering (eMule and PeerGuardian compatible)