PowerMerge 2.5 for Mac was free to download from our application library. This software for Mac OS X was originally created by Leader Technologies. The program is included in System Tools.
From the developer:
Backup utility that offers full duplication, that is it can remove files on the destination or source or both that have been moved or whose names have changed. This is one of the very few utilities I've found that allows this both ways in a synchronization. A free light version is available.
You may want to check out more software for Mac, such as SimpleSync, CarbonErrors or Titan4, which might be similar to PowerMerge.
Slideshow & Presentation