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.
DaisyDisk
Commercial
DaisyDisk is a disk space analyzer for OS X.
ncdu
Open Source
ncdu (NCurses Disk Usage) is a disk utility for Unix systems.
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.
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.
FolderSizes
Commercial
FolderSizes is a disk space management tool.
SpaceSniffer
Free
SpaceSniffer is a freeWare and portable tool application that lets you understand how folders and files are structured on disks.
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.
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.
MindGems Folder Size
Free
Folder Size is a freeware disk size analysis tool that will display the directory sizes and folder tree sizes.
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.
Xinorbis
Free
Xinorbis is a powerful hard disk, folder and storage analyzer.
Compare Baobab with alternatives
Compare SpaceSniffer and Baobab and decide which is most suitable for you.
Compare GrandPerspective and Baobab and decide which is most suitable for you.
Compare MindGems Folder Size and Baobab and decide which is most suitable for you.