UDFclient is a userland implementation of the UDF filingsystem as defined by the OSTA group. UDFclient is designed to be a study platform and a run-up to a full read and write kernel level implementation. UDFclient basically provides a user interface not unlike ftp(1) but always fetches and writes files recursively from the disc(s). See the packages homepage http://www.13thmonkey.org/udfclient for its features and history.