MTreeSize (see how much space ur folders are taking on your device)
 

Thanks to Chitza at XDA for this:
I wrote a small application that recursively finds out folder sizes for any folder.

Now you can see what folders take up most space and delete them entirely or specific files.

I'll just let the pictures speak for themselves, but you can read more on
developers site

http://i198.photobucket.com/albums/a...mtreesize1.pnghttp://i198.photobucket.com/albums/a...mtreesize2.png
http://i198.photobucket.com/albums/a...mtreesize3.pnghttp://i198.photobucket.com/albums/a...mtreesize4.png

Now looking good on VGA screens too (as of build 25)

http://i198.photobucket.com/albums/a...eSize_VGA2.png

If an error occurs while getting a foder's subfolders/files, a node with an warning icons is being added, for each situation respectively.

http://i198.photobucket.com/albums/a...esizeerror.png

Version History
v0.6 build 25
- created resources for 192DPI screens (480x640 pixels); now it should look fine on VGA screens (didn't tested for sqare screens though)
v0.6 build 23
- (hopefully) fixed the bug reported by stylez and db77 (xda-developers users)

v0.6 build 21
- changed drive icons due to possible licensing issues; switched to Crystal Project icons
- (hopefully) fixed a bug reported by user stylez on xda-developers thread

v0.6
- added "Info" screen, showing drives (their sizes and used/free space)
- some UI tweaks