Author: Botkind, Inc.
https://www.allwaysync.com/
License: Freeware
Requires: Win 2000/03/08/XP/Vista/7

Folder synchronization tool uses innovative synchronization
algorithms to synchronize your data between desktop PCs, laptops,
USB drives, remote FTP/SFTP servers, different online data storages
and more. Encrypted archives are supported. Allway Sync combines
bulletproof reliability with extremely easy-to-use interface.

https://www.ryanvm.net/forum/viewtopic.php?t=9575