This Jyotish Tools online horoscope generator which is powered by a simple server side PHP script. This script is very low impact as it uses data tables instead of doing intensive math calculations for planetary positions. Accuracy is around 0-2 minutes.Online Atlas.
Click here if in doubt about DST for the date.
Try new Quick Horoscope Beta.
A light weight app for mobile and desktop browsers with HTML5. Features built-in atlas.