alternative to treesize software

Is there an alternative to treesize software?  I'd like to see where are my space is being used up for?
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I use WinDirStat

Thomas Zucker-ScharffSolution GuideCommented:
I was going to say same thing.  WinDirStat is an excellent piece of software it represents your disk in a graphical form and display the tree at the same time.  Everything is color coded.  You can delete right from the graphic or the tree.  There is also a portable version:
Thomas Zucker-ScharffSolution GuideCommented:
I used to use sequoia, but unless it has changed, it was too restrictive.  I wasn't able to click on a graphical element and press delete like in WinDirStat.
I have used SpaceMonger and have had great results.  

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