Lock and secure your folders with this tool. Direcrory Lock To Sync can lock a folder , using feature of OS registery so, the advantage is that this program don't do much on your folder, so your file wont destroy becuz of locking.

Direcrory Lock To Sync Features:
1. simple design
2. active password
3. active alert before leaving
4. active keep path
5. remember 10 path

The license of this software is Free, you can free download and free use this file sync software.