libpubsub provides everything needed to set up a simple publish/subscribe environment. It allows a programmer to let several processes (not necessarily on the same host) exchange information with each other in a very easy way. It is mainly intended for use in C++ applications, but the package also includes a tool to let shell scripts use pubsub.
UDFclient is a userland implementation of the UDF filesystem as defined by the OSTA group. It is designed to be a study platform and a run-up to a full read and write (NetBSD) kernel level implementation. It provides a user interface not unlike ftp but differs in that it always fetches or writes files recursively. It supports the basic get, mget, put, mput, mv, rm, mkdir, cd, lcd, free, pwd, and lls command set.