i.Disk is a small utility that can tell you how your disk space is divided. According to the developer's site, it "scans directory trees and displays the total space used by each directory in an easy to use form." It's basically skin and bones, nothin' fancy, just shows you what you need to know. Here's a few pluses:
-Colored sublevels: each sublevel's is a different color, so it's easy to tell what level the folder is at.
-Copy and Paste: Easy copy and paste, within seconds, the entire tree, even the expanded subfolders. Very nice if you are on the go.
-"Browse": Nice, of course. You are able to open a folder straight from i.Disk.
-"Replicate"?: Apparently it has some feature called "Replicate," which is really like a folder syncronizer. You pick two folders and have the options such as "Replicate all files/folders from A to B" or vise versa, "Process subfolders," and "Include..." and "Exclude..." as well.
-Portable; You can either run the installer, copy the files, then uninstall it, or just use the Universal Extractor.
Here's a few things that I don't like about it though:
-No "Now Searching" dialouge": When it searches, i.Disk doesn't really tell you when it starts or finishs. The only way to tell is if the "Stop" button is lit up, and the "Open" and "Refresh" buttons are dimmed. It would be nice to have just a little text that says "Searching..." or something somewhere, but you get used to it.
-Doesn't show files: In the list, it doesn't show files, only folders. Other programs have this, such as WinDirStat.
Otherwise, it's an awesome little program. It's lighter than programs like WinDirStat, so if you don't need all the graphical interface or smoothness, you can use i.Disk and save on memory and space. The install is only 470kb with the installer, 439kb without, so it's very compact and ready to go.