CzDC

CZDC is a standard peer-to-peer file exchange tool that uses the Direct Connect protocol in order to facilitate file sharing over the Internet, while also allowing users to initiate conversations within the accessed hubs.
The main interface resembles that of other similar software, thus the application should not pose any problems to those who are accustomed to using DC clients. To setup a connection, the application requires you to enter a nickname, choose the Internet connection type, specify the download location and place some files in the shared directory.
Within the main window, you can access new hubs, initiate conversations with other connected users and view running and finished downloads, while all the configuration takes place within the 'Settings' window.
CZDC enables you to prioritize downloads, set the maximum number of available download and upload slots, configure search options (only search users that have free slots, duplicate management etc.), enable TTH and SFV checking or activate status bar notifications.
The application can be set to automatically search for alternative download locations, disconnect slow downloads and limit the transfer rate, which means that you can specify download and upload speed limits. Additionally, there are a few options especially designed for advanced users. They can set the filelist size, the auto-refresh interval, the socket read and write buffers.
Chat and the file transfer history, favorite hubs management tool, customizable user black list, automatic file indexing, network statistics are some of the other features that this application comes with.
One advantage of CZDC is that it does not require installation. However, that does not mean that it is portable, since it leaves traces on the system and within the registry.
To conclude with, CZDC is a file sharing and communication tool for the Direct Connect network. Providing decent transfer speeds and ease of use, it proves to be a viable alternative to more popular DC clients out there.