Looking for a program

[notwist]

I need help looking for a certain program. All I remember is that it lets you view every single file and folder in your computer, and it displays how much space each item takes up. Anyone know the name of this program?

 

[xUKHCx]

The two i use are:

Whatsize
Disk Inventory X

 

[epochblue]

For what basically amounts to a front-end for the 'du' command line tool, you could look at the OMNI Group's app, OMNI Disk Sweeper.