WinSCP is a free SFTP, SCP, S3, WebDAV, and FTP client for Windows.
A fast cross-platform FTP client
A universal P2P file sharing client for Windows
Diverse P2P Filesharing
A multi-protocol & multi-source, cross platform download utility
LibCMIS is a C++ client library for the CMIS interface. This allows C+
Efficient Usenet Downloader
NetCrypt - file-transfer utility providing secure data transfer
Transfers files/folders P2P over LAN or Internet