Dolda Connect is a modular P2P filesharing client built around the Direct Connect model. It supports most of the latest features of the DC protocol. It runs in client/server mode with a well defined protocol, allowing extensibility, flexibility, and multiple detachable user interfaces. It also has an optional multi-user mode.
The McNucle server software turns your Mac into an easy to use fileserver. Choose a file, generate the link, and send it to your friends. Your folder is presented to them in a handy Web page. You and your friends can now browse, preview, and download the files on your Mac from any Internet-enabled computer. Since you don't upload files up front, the amount of files you can present is virtually unlimited.