The GParted project has released a LiveCD which allows Ghost-like efficient disk and partition imaging over a network.
UnlikePartimage or ntfsclone, which only for partitions. Clonezilla, containing some other programs, can save and restore not only partitions, but also a whole disk.
Unlike G4U or G4L, in Clonezilla, if file system is supported, only used blocks in harddisk are saved and restored. This increase the clone efficiency.