OpenAstro.org is an open source astrology program.

Here are some key features of "OpenAstro.org":

· Natal/Radix Charts
· Transit Charts
· Synastry/Combine/Composite Charts
· Solar Return / Secondary Progressions
· Customizeable Planets & Aspects
· Additional celestial bodies: Chiron, Pholus, Ceres, Pallas, Juno, Vesta
· Fictional points: North/South Node, Day/Night Pars
· Cusp Aspects
· Monthly Timeline
· European and Traditional chart view
· Online Atlas (Geocoder) using google maps (virtually every location)
· Offline Atlas (Geonames) with about 80.000 major cities!
· Database export/import, Save as JPG, PNG, SVG, OAC
· Import from skylendar (.skif), oroboros (.xml)
· Import from astrolog32 (.dat), zet8 dbase (.zds)
· Ephemeris files for 1800 AD - 2400 AD (download seperately)

Requirements:

· Python