Slice-n-Save 

Slice-n-Save is useful when you want to split a file into smaller files. Original file is restored with a single click. One single file can be split into unlimited number of files. The slices can be recombined using a program with many options.
file splitter utility

WinTil 

WinTil is a collection of utilities that I had originally written for my own use. I have combined the various utilities into one program. WinTil includes a file splitter, program launcher, audio CD player, and other desktop enhancements.
utility desktop enhancement file splitter program launcher audio cd player