WinDirStat
Open Source
WinDirStat is a disk usage statistics viewer and cleanup tool for Windows based systems.
TreeSize
Freemium
TreeSize Free is a free disk space manager for Windows. The software shows you the sizes of folders including all subfolders.
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.
GrandPerspective
Open Source
GrandPerspective is open source software for Mac OS X used for disk space analysis.
SpaceMonger
Commercial
SpaceMonger is a tool for keeping track of the free space on your computer.
DiskUsage
Open Source
DiskUsage provides a way to find files and directories on storage card which consumes a lot of space.
GD Map
Open Source
GdMap is a tool which allows visualizing disk space.
RidNacs
Free
RidNacs is a free and very fast disk space usage analyzer for Windows.
SpaceSniffer
Free
SpaceSniffer is a freeWare and portable tool application that lets you understand how folders and files are structured on disks.
Baobab
Open Source
Baobab is a disk usage analyzer is a graphical disk usage analyzer for GNOME.
DaisyDisk
Commercial
DaisyDisk is a disk space analyzer for OS X.
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.
Filelight
Open Source
Filelight is a KDE graphical disk usage analyzer, part of the KDE Utils package.
Compare FolderSizes with alternatives
Compare WinDirStat and FolderSizes and decide which is most suitable for you.
Compare SpaceSniffer and FolderSizes and decide which is most suitable for you.
Compare TreeSize and FolderSizes and decide which is most suitable for you.
Compare JDiskReport and FolderSizes and decide which is most suitable for you.
Compare DaisyDisk and FolderSizes and decide which is most suitable for you.
Compare GrandPerspective and FolderSizes and decide which is most suitable for you.
Compare Scanner and FolderSizes and decide which is most suitable for you.
Compare SpaceMonger and FolderSizes and decide which is most suitable for you.
Compare WizTree and FolderSizes and decide which is most suitable for you.
Compare DiskUsage and FolderSizes and decide which is most suitable for you.
Compare SequoiaView and FolderSizes and decide which is most suitable for you.
Compare Filelight and FolderSizes and decide which is most suitable for you.
Compare RidNacs and FolderSizes and decide which is most suitable for you.