AstroWin - Spiritual astrology can help you understand yourself and others better.
Jagannatha Hora - Jagannatha Hora is a Vedic astrology software.
Parashara's Light - Vedic Astrology (Jyotish) Software! The Ultimate Vedic Astrology Software: Parashara's Light 9.0.
What Watch - What Watch is a powerful tool that covers many areas and techniques of astrology.
ChronosXP - Free Planetary Hours Software for Windows
Morinus - Morinus is an easy to use astrology software under GPLv3 license.