GSplit - GSplit is a free file splitter that splits any file into smaller files called pieces. Lots of customization options, attractive and easy-to-use interface.
HJSplit - HJSplit is a popular set of freeware file-splitting programs created by Freebyte.
Free File Splitter - File Splitter is a handy freeware program which allows to easily split and merge files
Unimus - Unimus is a Network Automation and Configuration management (NCM) solution designed for fast deployment network-wide and ease of use. Unimus does not require learning any abstraction or templating languages, and does not require any coding skills.
Xtremsplit - Xtremsplit is a software solution that enables to cut a large file into several smaller parts.
File Splitter Joiner - File Splitter Joiner is the name of a free file splitter plus joiner or you can say merger.