看看为什么你的硬盘空间没了。它能够为你选择的几个文件夹和驱动器显示其大小，已分配空间和被浪费空间的大小，文件的数目，文件拥有者，3D条形和饼状统计图，最后访问的日期，NTFS压缩率及更多其它信息。
TreeSize Professional is a powerful and flexible harddisk space manager for Windows 200X / XP / Vista (32 and 64 Bit). Find out which folders are the largest on your drives and recover megabytes on your disks. TreeSize Professional shows you the size, allocated and wasted space, the number of files, 3D charts, the last access date, the file owner and permissions, the NTFS compression rate and much more information of several folders or drives you choose. It also lets you search drives, entire servers or the entire network for old, big, temporary and duplicate files.