Sometimes it's easier to split up a large file than to transfer or back up the whole thing. File Splitter is a free utility that does just that, as well as joining split files. It doesn't require installation, but in other respects we found it a bit inconvenient to use. Its main flaw is that it can't create self-joining file sets. The interface is clear, but it only provides built-in settings for splitting files onto floppy diskettes; many users will want to create files for burning to CDs, if not to DVDs. File Splitter did show good speed in our tests, however, and if you don't mind figuring out the target file sizes yourself, it's an effective tool for cutting unwieldy files into manageable bits.