TreeSize is a powerful and reliable Windows application that allows users to scan their hard drives and analyze the file size distribution on their disks. It provides an easy to use graphical overview of the contents of a drive and allows users to quickly and easily manage their disk space usage. It can be used to find and delete large, old, temporary and duplicate files, and can also help to identify folders and files that are taking up large amounts of disk space, such as videos, music, applications, and documents. TreeSize can visualise the file size distribution and helps to identify large, unused files and folders. It also provides users with the ability to print a detailed report or export the data to an Excel compatible file.
SpaceSniffer works in real time (and is surprisingly faster), while TreeSize needs to rescan. It can scan allocated network volumes, you would need the paid version of TreeSize to have the same functionality. It looks better than WinDirStat. Overall it is the best choice for windows. For Linux, ncdu is the best choice, if you don't mind ncurses and console.
WizTree is faster and much more accurate than Treesize, as it handles linked files correctly (it does not count them more than once), so the total size allocated by WizTree will match the space used on the drive as reported by Windows.
Much faster than all the others I've tried, even on shared networks. The display is very similar to Windirstat, almost identical.
It's very fast, even on remote drives. I use it to manage my Google Drive through Google File Stream.
It not only reports the size of folders, but is also a file manager with tremendous functionality, and has toolbars at the top, bottom, splitting pain, and to the left, which can be fully customized with internal commands or external programs and scripts. And it takes screenshots, and so much more. I'm so impressed with it, and I'm very hard to please.
Does not show disk space and manages files as TreeSize
Discontinued The program seems to be no longer updated. The latest version, 2.13, released in July 2012, is fully functional and can still be downloaded from the official website.
Discontinued The program appears to be dead, as announced in a tweet from the author: https://twitter.com/bartheph/status/742596462807265280. The website and changelog appear to be abandoned. The latest version, 0.4.3, released at the end of 2015, can still be downloaded from the official website.
Free and although still under development does exactly what I need. It doesn't need the extra features that commercial applications offer.
DiskWave offers lightning-fast scans and presents the size of items on disk in a way that is easy enough to use so that you can know where your space is being used.
WinDirStat
SpaceSniffer
WizTree
FreeCommander
Baobab
DaisyDisk
DiskUsage
JDiskReport
GrandPerspective
QDirStat
Scanner
FolderSizes
K4DirStat
DiskWave
Xinorbis
SpaceMonger
RidNacs
OmniDiskSweeper
GD Map
laptop. Only one exe file. Easy to use