Major highlights include support for magnet links, full encryption, DHT (Distributed Hash Table), peer exchange, IP filtering, as well as an extensible and well-integrated search engine. It features fast resume of unfinished downloads on startup, without the need to recheck files. With its familiar, µTorrent-like GUI (Graphical User Interface) front-end, the program can be easily used by novice users. The application is written around the Qt4 toolkit, using the libtorrent-rasterbar library, which means that it supports the Linux FreeBSD, OS/2, Microsoft Windows and Mac OS X operating systems. QBittorrent is an open source project that provides users with a capable BitTorrent client that comes loaded with all the modern functionality necessary for daily torrenting.