Astrolog is a many featured and customizable astrology chart calculation program. It features wheels, aspects, midpoints, relationship charts, transits, progressions, simple interpretations, astrocartography, local horizon, constellations, planet orbits, dispositors, various influence charts, Esoteric Astrology, biorhythms, different zodiacs, central planets, 22 house systems, 10800 year ephemeris, asteroids, Uranians, fixed stars, Arabic parts, 195000 city atlas including time zone and Daylight Time detection, script files and macros, smooth animation of charts, and graphics export to bitmap and other formats. For those familiar with programming, Astrolog's complete C++ source code is available too.