keep folders in sync

[smolz]

I have and external drive that I want to use for backup purposes. I want to be able to have a copy of a folder on the backup drive and keep it in sync with the original folder.

 

[ElDiabloConCaca]

Easy enough:

http://www.versiontracker.com/dyn/moreinfo/macosx/1682

There's also a "Lite" version of that application on that same site -- a simple search should reveal it.