Astrology can be a profound guide, on its own terms, in achieving greater self-knowledge and to living life, and as such is deeply appreciated by many.
AstroDienst is one of many online resources for personal astrology.
Solar Fire is the leading astrology software for Windows. Solar Fire has been developed into the the excellent Astro Gold which works is available on all operating systems.
Archetypal Explorer is superb framework for personal and world astrology, with intuitive visualisations.
If you would like to add any sites or software to this list, please get in touch.