Softobe (http://www.softobe.com/) has released FoldersSynchronizer 4.2, an upgrade of their tool to sync and backup on Mac OS X.

FoldersSynchronizer lets you sync and backup files, folders, disks and boot disks. It provides options like Timers, Multiple Folders, Filters, Exclude Items, Auto-Mount local and remote volumes, the ability to launch your own AppleScripts, the ability to set how to resolve conflicts, the ability to execute an incremental or an exact copy, the ability to include locked files, a preview panel, log files, and more.

FoldersSynchronizer 4.2 adds a File Versus Folder" option to the Conflict panel (Tab E). You can now set how FS should behave in case of replacing a whole folder by a most recent file with the same filename.

You can set "Replace the folder" (default) or "Skip," and "Ask the user for what to do at running time." Previous versions of FS always skipped and left the folder untouched. Softobe introduced this option since the new operating systems changed some system files to folders and file packages, so the user can easily manage these cases too.

If you create a new FS document or a new session, the default settings are "Replace the folder" and "Don't Ask." Previous version documents get opened with the settings "Skip" and "Ask." You can change these settings on the Conflict panel.

FoldersSynchronizer 4.2 is compatible with OS X 10.9 or higher, including Yosemite. It costs US$40.