HTTrack - HTTrack is a free (GPL, libre/free software) and easy-to-use offline browser utility.
BitKinex - Bitkinex is a multiprotocol FTP client, supporting FTP, SFTP, HTTP (WebDAV).
GNU Wget - GNU Wget is a free software package for retrieving files using HTTP(S) and FTP, the most...
WinSCP - WinSCP is an open source free SFTP client and FTP client for Windows.
WebCopy - Cyotek WebCopy is a free tool for copying full or partial websites locally onto your harddisk for offline viewing.
DPLOY - An FTP/SFTP deployment tool built in node.js