AllSync is the professional solution for your data synchronization, imaging, backup, update, replication and archiving needs under Microsoft Windows.
AllDup helps you to find and remove duplicate files on your PC to free up hard disk space. AllDup is freeware for private and commercial use.
GetFoldersize allows you to determine the size of folders and sub-folders on your hard drive. GetFoldersize is Freeware for private and commercial use.