Disk Analyzer & Cleanup Freeware

GetFoldersize
Identify files/folders that are eating HDD space
2.32 MB
Parkdale
View read and write speed of hard disk and devices
0.70 MB
Spyglass
Visualize what folders are big and delete them
4.99 MB
WinDirStat
Analyze hard disk, identify big files and delete them
0.62 MB
WizTree
Quickly scan hard drive to identify largest files
0.87 MB
TreeSize
Find folders or files with big size
3.20 MB