Multipurpose planetarium. One of the best around, and still getting better... The organization of the menus is particularly innovative and the graphical display options very flexible. The negative point is its slowness, particularly with all the design trimmings activated; also, it does not allow direct printing.
On the graphical side, it offers the classical representation of the celestial sphere; the situation of the sky over the local horizon; elongations and heliocentric position of the planets and a tool to draft/register your sunspot observations.
On the ephemeris side, it gives you access to a wide set of utilities with all expected calculations: current time in some twenty calendars; eclipses; conjunctions; seasons; distances; moon phases; conversion of coordinates; an option to list the objects by type seen over a given period of time and on a given constellation etc, etc... Also featured is an interface to record personal observations.
The basic package includes databases of planets, comets, asteroids, eclipses, exoplanets and the 2000 star catalogue down to magnitude 8.
Further catalogues can be downloaded separately (visit the homepage and choose according to your specific needs: Tycho 2,
Master Star Catalogue etc...).