What are some alternatives?
When comparing BitTorrent and Transmission, you can also consider the following products
qBittorrent - Lightweight and open source torrent client that runs on all major platforms.
Deluge - Deluge is a full-featured BitTorrent client for Linux, Unix and Windows.
Vuze - Vuze is a free BitTorrent client used to transfer files via the BitTorrent protocol.
µTorrent - Looking for a torrent site to download movies, music and more? Choose from top torrent sites like The Pirate Bay, RARBG, 1337X, and dozens more. (October 2019)
Tixati - Tixati is a peer-to-peer file sharing program that uses the popular BitTorrent protocol.
rTorrent - rtorrent is a BitTorrent client for ncurses, using the libtorrent library.