• What are all the Jupiter-Saturn conjunctions?
• How often the Jupiter-Neptune opposition happends?
• When Mars will be square with Pluto?
• How can I see when Saturn and Uranus were at 35 degrees distance?
• Can I find the dates when Sun and Mars were at 60 degrees apart plus Jupiter trine Uranus?

How much time are you spending on finding answers to these questions? A lot...

Primary Direction Explorer (aka PDExplorer or simply PDE) is a freeware astroprocessor designed especially for exploring astrological Primary Directions. Along with regular set of features any astroprocessor has to implement, PDExplorer considers celestial body's oblique and in mundo longitude. These parameters are of some interest in primary direction analysis, though they are not easy things to calculate. Due to calculation difficulties many astrologers do not use Primary Directions in their practice.

Maitreya is a free software for Vedic and western astrology.

The software supports

• Many features for the daily work of Vedic and western astrologers.
• A large number of calculation options that make the program a stable basis for research purposes.
• High precision calculation.
• Several platforms including Windows, Linux and UNIX.

What Watch is a powerful tool that covers many areas and techniques of astrology. Its purpose is to get quick access to relevant information and displaying it in a concise and no-nonsense way: Keep it simple while providing all that is necessary. What Watch assumes that you're already familiar with some basics of astrology, and has an extensive tutorial explaining how to use the astrological techniques implemented here. My view on the foundations of astrology is also explained on this website.

RIYAL calculates astronomical positions and a wide variety of astrological measurements for the following bodies:

- Sun, Moon, and planets.
- named centaurs and transneptunians
- unnamed centaurs observed at 2 or more oppositions
- damoclians and oortoids with accurately determined orbits
- long-range scattered-disk objects observed at 2 or more oppositions
- unnamed transneptunians brighter than absolute magnitude 4.5
- additional list of asteroids selected by the user
- solar system barycenter

StarFisher is a feature-rich astrology program for Microsoft Windows provided free of charge, including the source files.

OS support: Windows Vista, Windows XP, Windows 2000, Windows NT 4.0

Astrolog 5.40 is a 100% freeware astrology program, with versions for Windows, DOS, the Macintosh, and Unix, and the complete source code is available too

Configuration Hunter is a free astrology software and it was designed to help you in your astrological activities. It is not built to replace any other astrology software that you are working with but to extend their existing functionalities.

A complete list of free astrology softwares created and maintained by Allen Edwall:

• Vocation
• Astro123
• SE Aspectarian
• AstroWin
• AstrAstr
• Election Helper
• AstroClk
• MatchMkr