FreeFileSync
FreeFileSync is a free Open Source software to synchronize files and synchronize folders available for Windows, Linux and Mac OS X.
Fast one way file synchronization, backup and mirroring command line utility for Windows. Perfect for personal backups.
onewaysynchronize is a windows command line tool for backing up files from a (source) to b (destination). it will make sure that b is an exact copy of a, by copying files and overwriting and deleting files on b. the original a files are never modified in any way. this is called onewaysynchronization or file mirroring. for each run on the same ab pair, only changes since last run are applied to b. it operates very fast and has good logging facilities. onewaysynchronize is particularly suitable for personal file backup, when used with portable hard drives, usb flash drives, your home nas or other server shares.
Portable File sync Command line interface
portable backup-and-restore file-synchronization synchronization command-line-interface windows-utility mirroring one-way-synchronize
FreeFileSync is a free Open Source software to synchronize files and synchronize folders available for Windows, Linux and Mac OS X.
Free Open Source Mac OS X Windows Linux Debian CentOS Ubuntu openSUSE
Allway Sync is a file and folder synchronization software for Windows.
Freemium Windows
Yintersync.NET is a client-server backup tool providing bandwidth and cost economic delta backups of multiple computers over SSL with open file support and reporting. .
Free Windows
An SSH browser with an rsync transfer engine. It lets you point-and-click to rsync.
Free Mac OS X
An SSH browser with an rsync transfer engine. It lets you point-and-click to rsync.
Commercial