Beyond Compare - Beyond Compare allows you to compare files and folders.
BitKinex - Bitkinex is a multiprotocol FTP client, supporting FTP, SFTP, HTTP (WebDAV).
WinMerge - WinMerge is an open source differencing and merging tool for Windows.
WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
DPLOY - An FTP/SFTP deployment tool built in node.js