WinDirStat
Open Source
WinDirStat is a disk usage statistics viewer and cleanup tool for Windows based systems.
SpaceSniffer
Free
SpaceSniffer is a freeWare and portable tool application that lets you understand how folders and files are structured on disks.
Scanner
Free
Scanner is a tool uses a sunburst chart to display the usage of your hard disk or other media.
WizTree
Free
WizTree gives you more control over how you see your files, in addition to letting you learn more about them from one look.
SequoiaView
Free
SequoiaView is a disk browsing tool based on the principle of treemaps.
FolderSizes
Commercial
FolderSizes is a disk space management tool.
FreeCommander
Free
FreeCommander is a freeware file manager with built-in FTP client, archive handling, multi-rename, wipe files and MD5 checksums.
JDiskReport
Free
JDiskReport enables you to understand how much space the files and directories consume on your disk drives, and it helps you find obsolete files and folders.
SpaceMonger
Commercial
SpaceMonger is a tool for keeping track of the free space on your computer.
MindGems Folder Size
Free
Folder Size is a freeware disk size analysis tool that will display the directory sizes and folder tree sizes.
RidNacs
Free
RidNacs is a free and very fast disk space usage analyzer for Windows.
Xinorbis
Free
Xinorbis is a powerful hard disk, folder and storage analyzer.
Compare TreeSize with alternatives
Compare WinDirStat and TreeSize and decide which is most suitable for you.
Compare FreeCommander and TreeSize and decide which is most suitable for you.
Compare SpaceSniffer and TreeSize and decide which is most suitable for you.
Compare JDiskReport and TreeSize and decide which is most suitable for you.
Compare SpaceMonger and TreeSize and decide which is most suitable for you.
Compare MindGems Folder Size and TreeSize and decide which is most suitable for you.
Compare SequoiaView and TreeSize and decide which is most suitable for you.
Compare FolderSizes and TreeSize and decide which is most suitable for you.