Project Pluto

Projectpluto.com has 3 URLs listed in 3 Dmoz categories.

Project Pluto
Desktop planetarium and charting program. [commercial - Dos, Win3.1/95/NT]
http://www.projectpluto.com/
Top/Science/Astronomy/Software/Desktop_Planetarium_and_Charting

Jupiter Satellites Events
Times for eclipse, occultation, transit, and shadow events.
http://www.projectpluto.com/jevent.htm
Top/Science/Astronomy/Solar_System/Planets/Jupiter/Moons

Minor Planet Groups and Families
Listing and description of dynamical groups and physical families of asteroids.
http://www.projectpluto.com/mp_group.htm
Top/Science/Astronomy/Solar_System/Small_Bodies/Asteroids