qBittorrent is free, powerful bittorrent client, and it is cross-platform available for all major platforms (Linux, Mac OS X, Windows, OS/2, FreeBSD). It is lightweight but feature-full BitTorrent client and very easy to use. It is written in C++ programming language and uses libtorrent as well, and a Qt4 Graphical User Interface. It has more and more features such as an integrated search engine, UPnP, encryption, PeX, a torrent creation tool, more. The program uses libtorrent-rasterbar library for the torrent back-end (network communication) functionality. qBittorrent aims to meet the needs of most users while using as little CPU and memory as possible. qBittorrent is an attempt to provide a μTorrent (or "uTorrent") equivalent that is open-source and multi-platform and in adding a streaming-like function to let users download and play video files. qBittorrent currently offers functionality comparable to other BitTorrent clients, such as Vuze but without requiring the Java Virtual Machine. For its BitTorrent and μTP implementation, qBittorrent uses the Rasterbar libtorrent library, which is itself written in C++.
Features:
- Simultaneous download of multiple torrents
- Integrated torrent search engine
- Integrated RSS feed reader and downloader
- Good internationalization
- DHT, PeX, Encryption, LSD, UPnP, NAT-PMP, µTP
- Cross platform (Linux, Mac Os, Windows)
- Very lightweight
- Torrent queueing and prioritizing
- Control over files in a torrent (filtering, prioritizing)
- Nice µTorrent-like interface with Qt4 toolkit (qBittorrent v2.x)
- IP filtering (eMule dat files or PeerGuardian files)
- Peer display with country and hostname resolution (qBittorrent v2.x)
- Advanced control over torrent trackers (qBittorrent v2.x)
- Closest open source equivalent to µTorrent (qBittorrent v2.x)
- Torrent creation tool
- Remote control through Secure Web User Interface
