archiver <...> [...]

Required: mode (zip/unzip)
          directory to zip/archive to unzip
          archive file name/path to unzip
Modes: zip (creates an archive)
       unzip (unpacks an archive)

If using the zip mode you can specify two
directories the archiver will skip after
the required parameters.

(c) 1Ridav.
This is the only third-party program that
FREAX is using. It is, however,
not a required part of the system.