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Vasilis Kanatas is a pioneer in 13-sign astrology, and a prime developer of the Prometheus 13-sign software, which he co-wrote. Making true astronomical charts have never been easier, and this software has an "animate" feature so you can track transits in real time. This amazing application is available on his website for as little as $215 for the basic version, and $345 for the deluxe version, which includes a beautiful interactive sky-map. A must for the 13-sign astrologer.

Click to go to Vasilis' website


Donna Provancher the Grand Dame of Sidereal and 13-sign culture; an inexhaustible scholar and amazing writer, she provides the complete spectrum of what is known so far about the elusive and persecuted Ophiuchus. Her website Startistics is fertile ground for new ideas and the rich but buried history of the Zodiac. Provancher combines astronomy, archeology, astrology and current affairs and every page is a treasure trove of research and opinion.

Click to go to the "Qunitissential Ophiuchus"


ASTROAPP is a cloud-based 13-sign astrology system that's perfect for any astrologer or the curious star-gazer to learn about the Astronomical Zodiac. For $13 a month, you can make accurate 13-sign horoscopes, transit charts, generate both traditional and Parens aspects, and retain and export your charts. Astroapp is native 12-sign, but the authors are making an effort to accomodate 13-sign, and all the house systems--and they offer free updates and instant technical advice. This is a very good value, I use it to make charts on my phone, when I'm on the go.


Click to go to astroapp


The Mystic. 13-sign Zodiac from the cosmic perspective, with graphics and an analysis of the 26,000 year cycle of the precession of the equinoxes (the "holy cross"). A combination of astronomy, mythology, and current events. "Although the few years ahead may stimulate intense revolutionary action and reaction, they also provide opportunity for wide sweeping solutions that heralds us into a new time/paradigm on Earth." Mind-blowing. Free and also subscription, (English)

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13 sign astrology app ($13 a month)

Beautiful 13-sign charts and real time transits

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