namefix.pl is a cross-platform batch file renaming utility first released in 2006. It automates the cleanup of large sets of filenames using regular expressions and configurable rules. Features include handling of whitespace, punctuation, extensions, directory processing, safe overwrite checks, and dry-run mode. Both command-line and Tk GUI interfaces are provided. The project was created by Jacob Jarick and is licensed under the GNU General Public License (GPL).