FBackup

FBackup is a free backup software for both personal and commercial use. It protects your important data by backing it up automatically to any USB/Firewire device, local or network location. The backed up data can be either compressed (using standard zip compression) or an exact copy of the original files. —but the killer feature is support for plugins that tell the backup application exactly which files to backup—an extremely useful feature for easily backing up hard-to-find files like the profile folders for browser software without resorting to manually finding each location from deep within