InstantSync Secure FTPS/SFTP
InstantSync is a secure desktop tool for high speed file synchronization, mirroring, replication and backups. It utilizes industry standard FTP/SSL and FTPS over SSH protocols to ensure data safety and encrypts all data with strong encryption ciphers. ... The Sync Preview feature allows you to see the sync results without actually transferring anything, and helps you to test and fine tune sync task filters and other options. ... The InstantSync accelerates file transfer with multithreaded transfer engine and on-the-fly file compression.
http://sitedesigner.com/dnl/instantsyncftps.zip - 7Mb - Download - Screenshot

BatchSync Secure FTPS/SFTP
BatchSync is a secure and reliable tool for automating file synchronization, mirroring, replication and backups. It utilizes industry standard FTP/SSL and FTPS over SSH protocols to ensure data safety and encrypts all data with strong encryption ciphers. ... It's distributed with two separate sync tools: A visual Task Editor-software for sync task previews, editing and testing and a command line tool for automating sync runs via scheduling and batch runs. ... It also supports automatic retries, reconnectes and resume for error free file transfers.
http://sitedesigner.com/dnl/batchsyncftps.zip - 7Mb - Download - Screenshot

SynchronEX File Sync/FTP/DAV for Linux
SynchronEX for Linux realizes robust multi-directional file tree synchronization and backup over local & network paths in any situation: From laptop synchronization to scheduled backup tasks to incremental FTP/DAV website upload. It supports true synchronization of (re)moved files and... The virtual file system design of this file synchronizer integrates ZIP archives, FTP, FTPS, SFTP, WebDAV, automatic file version tracking (XVS), split-backup on changeable media and other storage options seamlessly.
http://www.xellsoft.com/download/synchronex.tar.gz - 2Mb - Download - Screenshot