AdslShare aims to be a powerful file sharing tool. It is built with modularity in mind. Each piece of the software is a plugin that can be loaded at start time. It currently has a GTK+ 2.x interface and a Gnutella protocol plugin. Planned features include the ability to download from different hosts, resume downloads and uploads, a new protocol with a more intelligent download engine, and a scripting interface.
Openline is the open source version of Hotline. Hotline is a PC/MAC client/server application that provides users the ability to create and manage a desktop community. The application has file uploading and downloading, instant messaging, a bulletin board, threaded news, and public and private chat.
Huntor is a full-featured command line Bittorrent client. It currently has no GUI. This client focuses on being run in the background, such as on servers. It is highly customizable. Its disk storage layout makes it easy to incrementally rsync the data to a different machine while downloading.