SPOPS (Simple Perl Object Persistence w/ Security) is a robust and powerful
Perl module that allows you to serialize objects. It is unique in that it also
allows you to apply security to these objects using a fairly simple but
powerful scheme of users and groups. It's also unique in that for most
objects, you will not need to write any code. All you need is a fairly simple
configuration file, and you can have a class for your object ready to go, right
out of thin air.