Astro-Online is an open source web based astrology program that can be downloaded and installed on any web server. The download package contains a ready to go set of horoscope interpretations. Astro-Online also supports cloud computing facilities as widgets present horoscopes that can be added to websites and personal pages (no installation necessary) by simply adding a few lines of code to a HTML page.

Astro-Online architecture
Astro-Online download
Astro-Online widget sharing (no software installation needed)
Astro-Online documentation