rTorrent is a text-based ncurses BitTorrent client written in C++, based on the libTorrent libraries for Unix. Developed by Jari Sundell
License: Open Source
Shareaza is a peer-to-peer file sharing client running under Microsoft Windows which supports the gnutella, Gnutella2 (G2), eDonkey, BitTorrent, FTP, HTTP and HTTPS network protocols and handles magnet links, ed2k links, and the now deprecated gnutella and Piolet links. Developed by Shareaza Development Team
License: Open Source
Shareaza offers a multi-protocol experience with a user-friendly interface and integrated media playback, making it suitable for casual users. In contrast, rTorrent is a lightweight and highly configurable BitTorrent client favored by more technical users who prioritize performance.