Astro-Online is a web (now widget) based astrology program that can be downloaded and installed on any web server. Widgets (horoscopes) can also be shared through a share button on websites and personal pages (no installation necessary).
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.