BitTorrent is a peer-to-peer file-sharing protocol that is commonly used to distribute large amounts of data between multiple users.

Transmission is a BitTorrent client with an easy-to-use frontend on top a cross-platform backend. Native frontends are available for OS X and Windows, as well as command line and web frontends.

Notable features of Transmission include support for Local Peer Discovery, encryption, DHT, µTP, PEX and Magnet Link.