3nity File Splitter and Joiner is capable of splitting and recombining files, not unlike a file compression tool.
It works by splitting a file into several pieces and then joins them together recreating the original. It will then permit you to put them back together into the original form.
An app such as 3nity File Splitter and Joiner will come in handy when attempting to move large files to a USB device, for instance, allowing you to chop it up into easily transferable pieces and then reassemble whole when needed.
3nity File Splitter and Joiner Features:
Supports drag and drop
Split very large files
integrates into Windows Explorer to let you split your files directly from the context menu
You can register the app for $19.00, but there is no clear indication of what benefits this provides as it appears to be fully-functional as is.