Menu item displays/monitors your disk space. DiskSpace is a small utility that exists for only one purpose: to tell you when you?re running low on disk space (hence the name). The developerwrote this because his Pismo PowerBook generally has less than a gigabyte of space left on its internal drive, and what with downloads, buggy programs that spit out way too much data, and other buggy programs that don?t efficiently use memory and therefore create lots of swap files, He too frequently got the dreaded ?No space left on device? error, which causes all sorts of headaches.