[plug] File Synchronize - Open Source

[Brock Woolf]

Hi,
    just wondering if anyone knows of any Open Source file 
synchronization programs out there. I've just never been able to find a 
good one, even for windows over the years.
I use Linux Mandrake and Mac OS X now only, I know this isn't a Mac 
help place but even if someone knows where I can get a serial for 
Synchronize! Pro X 3.4.3 (OS X) otherwise I'll have to sync from the 
Mandrake computer. I just don't know how to solve this problem...
Thanks in advance,
  - Brock