| perl540Packages.TestSnapshot | Test against data stored in automatically-named file |
| perl540Packages.FilesysDiskUsage | Estimate file space usage (similar to `du`) |
| perl540Packages.MojoUserAgentCached | Caching, Non-blocking I/O HTTP, Local file and WebSocket user agent |
| perl540Packages.PathIteratorRule | Iterative, recursive file finder |
| perl540Packages.CPANChecksums | Write a CHECKSUMS file for a directory as on CPAN |
| perl540Packages.ModuleManifest | Parse and examine a Perl distribution MANIFEST file |
| perl540Packages.librelative | Add paths relative to the current file to @INC |
| perl540Packages.FilesysNotifySimple | Simple and dumb file system watcher |
| perl540Packages.ModuleSignature | Module signature file manipulation |
| perl540Packages.TestRunPluginColorFileVerdicts | Make the file verdict ('ok', 'NOT OK') |
| perl540Packages.PAUSEPermissions | Interface to PAUSE's module permissions file (06perms.txt) |
| perl540Packages.TestPortabilityFiles | Check file names portability |
| perl540Packages.SpreadsheetParseExcel | Read information from an Excel file |
| perl540Packages.SpreadsheetWriteExcel | Write to a cross platform Excel binary file |
| perl540Packages.LocaleMaketextLexiconGetcontext | PO file parser for Maketext |