WinSCP, a popular free SFTP and FTP client for Windows, copies files between a local and remote computer. It supports also FTPS, SCP and WebDAV. It offers easy to use GUI for all common file operations and a powerful automation with .NET assembly.
RemoteFinder – Finder like app for copying files over a scp connection under Mac OS X
vnstatGUI project is an IPCop addon that allows you to query an installed vnStat and show the output.