Perlanet is a program for creating programs that aggregate web feeds (both
RSS and Atom). Web pages like this are often called "Planets" after the
Python software which originally popularised them. Perlanet is a planet
builder written in Perl - hence "Perlanet".

You are probably interested in Perlanet::Simple to get started straight
out of the box, batteries included style.

Perlanet itself is the driving force behind everything, however. Perlanet
reads a series of web feeds (filtering only those that are valid), sorts
and selects entries from these web feeds, and then creates a new aggregate
feed and renders this aggregate feed. Perlanet allows the user to
customize all of these steps through subclassing and roles.

For most uses, you probably don't want to use the Perlanet module. The
perlanet command line program is far more likely to be useful.