WinSCP is an open source free SFTP client, FTP client, WebDAV client and SCP client for Windows. Its main function is file transfer between a local and a remote computer. Beyond this, WinSCP offers scripting and basic file manager functionality.
This is a very useful program to get files off a PC and onto a Linux server which supports these services out of the box. I find Samba to be too clunky, unreliable, and very noisy on an open network by broadcasting packets to everyone. Only now did I have a need for something like this and SCP solves my problem and is more secure and easier to use than standard ftp. I still map drives using Samba on my closed network but I may try out the windows version of sshfs sometime in the future. The user interface on this tool is very intuitive and works well.