It is the most powerful astronomical software available today. Landmark stellar database integrates the best data from Hipparcos, Tycho, PPM, SAO, GSC, GCVS, NSV, CCDM, and many other catalogs . Actually two databases, one optimized for high speed searching, the other for high speed mapping. See Database Advantages for more info.
Charts are highly customizable, including colors, labels, coordinate grids etc.
Requires approximately 10MB of hard disk space.