Net::Server also provides a flexible framework for writing servers. I found it to be straightforward to use.

Now, you say you are looking for a daemon, but then describe a server. The two are not exactly the same thing in my mind. A daemon does not necessarily listen on ports; it may be doing other tasks (useful or useless, as it may be) that are strictly local to the machine. A server listening on a port can be a special case of a daemon.

yours,
Michael