ICS Softwares. Tamil Astrology Software. Free for Current Year Only. Based on Thirukanidha Panchangam, We can calculate Horoscope in Tamil with full details of Astrological Calculations. Dasa Varga Charts Calculations, Dasa Bukthi Calculations, Bhava Spudam &. Predictions. Matching with Dhosa Samya. Now, with Chart Style changing Possibility. Now, it is more user friendly.