uhub is a high performance peer-to-peer hub for the ADC network. Its low memory footprint allows it to handle several thousand users on high-end servers, or a small private hub on embedded hardware. It uses the ADC protocol, and is compatible with DC++, jUCy, and other ADC clients.
dc_qt is a Direct Connect client based on DC++. The GUI is based on Qt. The goal of the project is to provide features not seen in other clients, while providing the easiest user interface possible at the same time. One interesting feature is the ability to run the client and the GUI on different machines.