Astrology calculation, charting, and analysis

Astrolog astrology calculator

Astrolog is astrology software featuring many types of computation, display, graphics, comparison, and analysis. It supports multiple environments, such as MS Windows and Unix X Windows, with complete C++ source code available. For more information see the Web site:


  • Show planets, asteroids, Uranians, and fixed stars, with 10800 year ephemeris.
  • Compute 22 house systems, geo/heliocentric, ayanamsas, harmonics, decans.
  • Display wheels, aspect/midpoint, local horizon, rising/setting, astro-graph, etc.
  • Search transits, progressions, aspects over time, sign/direction changes.
  • Compare synastry, composite, time/space midpoint, and weighted influences.