qBittorrent is an interesting alternative to the amazing µtorrent, incorporating many features for those interested in frequently downloading torrents. The most attractive feature--its search tool--allows you to filter torrents according to their category (TV shows, music, anime, PC programs, etc.) and use different search engines, such as The Pirate Bay, Mininova, and IsoHunt. In addition, it includes a simple tool for creating torrents, it is compatible with UPnP / NAT-PMP, has RSS subscription with download filters, and many more things you will find that are integrated in developer's page. qBittorrent is very easy to use and allows you to begin downloading within seconds of having installed it. Thus it is ideal for users with little knowledge of computer science. And if that weren't enough, qBittorrent Portable allows you to enjoy the app from any mobile storage device, which is why you won't have to install anything on any device.
