Folder Marker - Change folder color in two mouse clicks for easy at-a-glance identification.
Free File Splitter - File Splitter is a handy freeware program which allows to easily split and merge files
Teorex FolderIco - FolderIco allows to change the color of Windows folder in one click!
HJSplit - HJSplit is a popular set of freeware file-splitting programs created by Freebyte.
Dr. Folder - Customize windows folder
Batch File Split & Join - Split and merge multiple text or binary files in either character, line, or byte modes. When splitting files, you can split on certain text or binary separator; target given number of parts; or target specific part size. Join files on lines/bytes.