qBittorrent is a multiplatform BitTorrent client, including for Windows which enables end users with broadband to join the BitTorrent peer-to-peer (P2P) distribution system and download files via this protocol.
The BitTorrent protocol is designed to distribute large quantities of data (e.g. the ISO files of many Linux distros) among many users without saturating the bandwidth of the host server. In traditional file distribution, a high demand for a large file can overwhelm the bandwidth resources of the server whereas with the BitTorrent protocol, the bandwidth demands are shared amongst the clients who are downloading the data.