CTorrent is a BitTorrent client with a command line interface, written in the C++ programming language. It currently runs on most Linux variants, Mac OS X and FreeBSD. Released under the GNU General Public License, CTorrent is free software. The CTorrent project was discontinued in 2004 by its primary author YuHong. Since then, a set of enhancements to the original client have been developed, called Enhanced CTorrent.