I’ve been looking for a easy, free and reliable solution to sync documents and most importantly propagate changes to both my desktop computer and a portable USB thumb drive for sometime. I came across this light weight free app SyncBack. It also come in a SE and Pro versions at a cost.
SyncBack easily backup, synchronize, or restore files to another drive, FTP server, ZIP file, networked drive, or removable media. It is highly configurable, SyncBack includes: detailed, easy to read log files; email results; simulated backups and restore; file filters; sub-directory selection; copy verification; background backups; auto-close of programs; easy and expert modes; profile groups; compare files, and an extensive context sensitive help file.
Supported platforms: Windows Vista, Windows XP, Windows 2003, Windows 2000, Windows 98, 98SE, ME, and NT 4 – Please note that Windows 95 is not supported.