You need to be more specific about your requirements:
1. Sync one way (A to B) or two ways (A to B and B to A)?
2. Only sync new and changed files or also deletions?
Kees
What are the best free folder synchronising utilities with their pros and cons and which one can be called the best among the best

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic