Here’s another in our series of lab-tested, must-have free utilities for Mac nation.

SyncTwoFolders is our favorite back-up program. It’s great for iTunes, iPhoto and most anything that’s stored in directories.

What we like about S2F is it’s flexability and simplicty. You choose your source, choose the target and choose a sync option:

Short explanations of each option pop up in the alt text to assist you. We use the one chosen here (Source up Target) to send files to an archive. Files are added from the Source to the Target (but not the other way around). Nothing is destroyed or over-written on the Target. Perfect for iTunes.

You can get SyncTwoFolders on Site de Tom Christ Flo Joa or MacUpdate where it is a five star rated utility.