RetroShare is open source software for encrypted filesharing, serverless email, instant messaging, online chat, and BBS, based on a friend-to-friend network built on GNU Privacy Guard (GPG). Developed by DrBob
License: Open Source
RetroShare offers a decentralized approach with strong privacy features and integrated chat functionality, making it ideal for secure file sharing and communication. In contrast, rTorrent is a lightweight torrent client focused on efficient downloading and management of torrent files, suitable for users who prioritize speed and resource management.