DirSize is a Office Tools software developed by DataMystic. After our trial and test, the software is proved to be official, secure and free. Here is the official description for DirSize:
BrothersoftEditor: DirSize is a command line tool to show you how much disk space is used and wasted in each directory.
Its uses include: -Finding space hogs on a network -Finding multiple copies of a single application on a server -Finding which directories could be archived to save space (typically those that contain lots of small files) -Finding where most of the disk space is used -Finding applications to remove before installing a new one -Previewing the benefits of a smaller cluster size -Generating daily, weekly or monthly reports showing how the disk space distribution has changed. You can easily generate html, tab- or comma-delimited output to feed directly into your favorite -spreadsheet for further Analysis Showing you the complete directory tree
User Benefits -New! DirSize can Now ignore the sizes of offline files. -The directory tree can be limited to just those branches showing more than a specified amount e.g. 20 MB. This is very useful to find out who is hogging space on a network. -Displays Windows 95 long FileNames. -Uses international thousands separator based on country information. -For the drive, displays cluster size, free space, used space and Capacity. -For each directory shown, displays total space used, wasted space (either as a percentage or as an actual value) and directory name. If the directory has sub-directories, it also shows the combined total -this is very useful for finding the complete size of applications before deletion or backup. -For the files examined, displays total used space, total wasted space and the cluster size used (the user can specify a size other than the drives actual cluster size so that they can see how much space would be wasted under a different configuration). -Rounds up file sizes to the cluster size AND includes the size of each directory for the most accurate size information. -Fully scrollable output (both up and down). you can free download DirSize 4.9.1 now.