QBittorrent

qBittorrent is a native application written in C++. It uses Boost, Qt 5 toolkit, and the libtorrent-rasterbar library (for the torrent back-end). Its optional search engine is written in Python.

A screenshot of qBittorrent v4.3.9 running on Arch Linux

qBittorrent was originally developed in March 2006 by Christophe Dumez. It is currently developed by contributors worldwide and is funded through donations, led by Sledgehammer999 from Greece, who became project maintainer in June 2013.

Along with the 4.0.0 release a new logo for the project was unveiled.

Some of the features present in qBittorrent include:

• Bandwidth scheduler
• Bind all traffic to a specific interface
• Control over torrents, trackers, and peers (Torrents queueing and prioritizing and Torrent content selection and prioritizing
• DHT, PEX, encrypted connections, LPD, UPnP, NAT-PMP port forwarding support, uTP, magnet links, private torrents
• IP filtering: file types eMule dat, or PeerGuardian
• IPv6 support
• Integrated RSS feed reader (with advanced download filters) and downloader
• Integrated torrent search engine (Simultaneous search in many Torrent search sites and Category-specific search requests (e.g. Books, Music, Software))
• Remote control through Secure Web User Interface
• Sequential downloading (Download in order)
• Super-seeding option
• Torrent creation tool
• Torrent queuing, filtering, and prioritizing
• Unicode support, available in about 70 languages

qBittorrent is cross-platform, available on many operating systems, including: FreeBSD, Linux, macOS, OS/2 (including ArcaOS and eComStation), Windows.

As of July 2017, SourceForge statistics indicate that the most popular qBittorrent version of all supported platforms, 81% of downloads were for Windows computers.

As of May 2020, FossHub statistics indicate qBittorrent as the second most downloaded software with over 75 million downloads.

Packages for different Linux distributions are available, though most are provided through official channels via various distributions.

In 2012, Ghacks suggested qBittorrent as a great alternative to uTorrent, for anybody put off by recent controversial ad and bundleware changes made to uTorrent.