syncbackup version 1.1.2 has been ported (2012/08/07) to OS/2. This is a front end for rsync, which uses the Qt4 libraries.
This port requires the Qt 4 libraries and libc065.dll .
File: ftp://ftp.netlabs.org/pub/qtapps/syncbackup-1.1.2-os2.zip
Official Project URL: http://www.darhon.com/syncbackup
Port by Elbert Pol.