Windows

AccuSplit
Shareware Win32 application to split large files into smaller segments using a cryptographic algorithm to insure data integrity.
http://members.cox.net/accusplit_support/index.htm

AETSplitZ
32 bit Windows program to split, join, zip and unzip any file. Ability to split files so they can be rebuilt from a .BAT file.
http://rain.prohosting.com/aetsys/

Copy-Zit
Shareware file splitter from Marco Software.
http://www.marco-software.com/CopyZit/index.html

CyberSoft PhileSplitter 2003
Shareware file splitter with friendly interface and features including plugin support, resumable splitting, script and HTML generation. Win 95/98/NT/ME/XP/2000 compatible.
http://www.cybersoftcentral.com/products/philesplitter/default.asp

Dariolius - KanastaCorp
Program that allows the control of many aspects of splitting files. Choose to split files according to different criteria. Recombine the files using either a DOS batch file or a merger program. [Win9x/Me/NT/2000]
http://www.kanastacorp.com/dariolius.html

The File Splitter
Free program to split any file into sections of any size and later reconstruct the sections to form the original file. [Windows 95/98/Me/NT 4/2000/XP]
http://www.dekabyte.com/filesplitter/

File Splitter Deluxe
Split large files, then easily rejoin them without the use of this software.
http://www.softdd.com/filesplt/index.htm

JR Split File
Free file-splitting utility to split a large file into smaller files so that they can be easily copied to floppy disks or transferred via e-mail. [Windows 95/98/2000/NT/ME/XP]
http://www.spadixbd.com/freetools/

ProCut 2002 Spring 1.1.0.21
File splitting and merging utility completely integrated in Windows Explorer and is accessible from his context menu. [Windows 95/98/Me/2000/XP]
http://henson.newmail.ru/

SplitNow
Shareware tool to split and zip files into small ones, the resulting files can be merged on any PC without this software. [Windows 95/98/ME/NT4.x/XP/2000]
http://orbisoft.iespana.es/orbisoft/

Splitter Pro 2000
Shareware file splitter, split large files and groups of files into just about any file size. Runs on Windows 95, 98, ME, NT, 2000.
http://www.nehuenmultimedia.com.ar/html/splitter.html

SplitWinCL
File splitting shareware for Win 95/98, comes with MFCDLL shared library.
http://cplusplus.8m.com/SplitWinCL/