qBittorrent 4.2.1

qbittorrent

The qBittorrent project aims to provide a Free Software alternative to µtorrent. qBittorrent is an advanced and multi-platform BitTorrent client with a nice user interface as well as a Web UI for remote control and an integrated search engine. qBittorrent aims to meet the needs of most users while using as little CPU and memory as possible. qBittorrent is a truly Open Source project, and as such, anyone can and should contribute to it.

qBittorrent 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/BitComet URIs, ...
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)
Torrent creation tool
Advanced RSS support with download filters (inc. regex)
Bandwidth scheduler
IP Filtering (eMule and PeerGuardian compatible)
IPv6 compliant
Available on most platforms: Linux, Mac OS X, Windows, OS/2, FreeBSD

qBittorrent 4.2.1 release notes:

qBittorrent v4.2.1 was released. Due to libtorrent fixes, UDP through proxies should work again. In some cases it also caused crashes. ATTENTION: There's a slight change in the way network interfaces are configured. If you have a specific network interface/local address set in the Advanced Settings, go and make sure that your settings have stayed the same. The extra setting for Listen on IPv6 address has been removed.

qBittorrent 4.2.1 changelog: