Currently, the landscape is specialized. Here are the leading tools (both legacy and modern):
Vakya system does use a sliding ayanamsa. Instead, it has fixed pāta (node) positions updated every 7200 years. The software implements: vakya panchangam astrology software
Overview Vakya Panchangam bridges ancient Indian calendrical tradition and modern computation. It generates accurate daily Panchang elements (tithi, nakshatra, yoga, karana), sunrise/sunset and moonrise/moonset times, planetary positions, muhurta windows, and event alerts—supporting both vakya rules and astronomical ephemerides for verification and precision. The software is suited for pandits, temples, astrologers, calendar publishers, and developers building Indian-astrology integrations. Unlocking Ancient Celestial Wisdom: The Ultimate Guide to