Oroboros is an open source astrology software written in Python.
It is based on the Swiss Ephemeris (pyswisseph) for planetary calculations, the Olson timezone database (pytz) for date and time resolution, the GeoNames.org atlas database, and the Qt4 toolkit (PyQt4) for the graphical user interface.
The software also uses reStructured Text for charts comments, and the lightweight Source Control Management system, Mercurial, as a mirroring system for chart directories.
Oroboros uses a flexible configuration system with a large panel of planets and aspects, midpoints, heliocentric and topocentric charts.
It requires Python version 2.5 or higher.
Key Features
- Charts: natal/radix, transits, progression, harmonics, profection.
- Open Astrolog or Skylendar charts.
- Save charts as images in various formats (png, jpg, bmp, svg,…).
- Query the online GeoNames.org atlas database.
- Calculates all planets, nodes.
- More than 300 fixed stars.
- Asteroids (Eris, Quaoar, Sedna, etc).
- Uses Swiss, JPL, or Moshier Ephemeris.
- A flexible and powerful configuration system.
- Geocentric, topocentric, heliocentric or barycentric charts.
- Various house systems, including Gauquelin sectors.
- Tropical or sidereal zodiacs.
- Midpoints calculations and drawings.
- Format comments with Docutils reStructured Text.
- Synchronize your charts with a distant repository (using Mercurial).
- A few toys for IRC chat addicts (Supybot plugin).
- Easy extension capabilities with the Python language.
Website: pypi.python.org
Support:
Developer: S. Marquis and contributors
License: GNU General Public License v3.0

Oroboros is written in Python. Learn Python with our recommended free books and free tutorials.
Related Software
| Astrology Software | |
|---|---|
| Skylendar | Modern design astrology software for KDE with SQL support |
| Cenon Astro | Astrology module for Cenon |
| Astrolog | Award winning software |
| Asteria | Astrological chart calculator and analyzer |
| Maitreya | Vedic and Western Astrology |
| OpenAstro.org | Fully featured astrology application |
| Astrologer Studio | Astrology workspace |
| SymSolon | Analyze horoscopes wiyh Symbolon cards |
| Oroboros | Python based astrology software |
| Morinus | Uses the Swiss ephemeris for accuracy |
Read our verdict in the software roundup.
Explore our comprehensive directory of recommended free and open source software. Our carefully curated collection spans every major software category.This directory is part of our ongoing series of informative articles for Linux enthusiasts. It features hundreds of detailed reviews, along with open source alternatives to proprietary solutions from major corporations such as Google, Microsoft, Apple, Adobe, IBM, Cisco, Oracle, and Autodesk. You’ll also find interesting projects to try, hardware coverage, free programming books and tutorials, and much more. Discovered a useful open source Linux program that we haven’t covered yet? Let us know by completing this form. |

