WinDirStat
Open Source
WinDirStat is a disk usage statistics viewer and cleanup tool for Windows based systems.
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.
TreeSize
Freemium
TreeSize Free is a free disk space manager for Windows. The software shows you the sizes of folders including all subfolders.
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.
Compare SpaceSniffer with alternatives
Compare WinDirStat and SpaceSniffer and decide which is most suitable for you.
Compare TreeSize and SpaceSniffer and decide which is most suitable for you.
Compare JDiskReport and SpaceSniffer and decide which is most suitable for you.
Compare Scanner and SpaceSniffer and decide which is most suitable for you.
Compare SpaceMonger and SpaceSniffer and decide which is most suitable for you.
Compare WizTree and SpaceSniffer and decide which is most suitable for you.
Compare MindGems Folder Size and SpaceSniffer and decide which is most suitable for you.
Compare SequoiaView and SpaceSniffer and decide which is most suitable for you.
Compare RidNacs and SpaceSniffer and decide which is most suitable for you.
Compare FolderSizes and SpaceSniffer and decide which is most suitable for you.
Compare Xinorbis and SpaceSniffer and decide which is most suitable for you.