Synastry

Archetypal Astrology
A Jungian approach to astrological consultation focusing on relationship issues.
http://www.archetypalastrology.com/

The Astrology Connection
Offers unique relationship compatibility reports with a focus on answering specific questions concerning love, sex and compatibility.
http://astrologyconnection.com

AstroMatch Rating
Determine your astrological love, friendship and business compatibility ratings.
http://www.astromatch.net/

AstroTwin Search
Search for your astrological twin - if nobody is yet listed that matches you can leave behind your details for others to find. Natal charts also available.
http://members.tripod.com/~RhapsodyM/twin.html

Positive Astrology
Offers information and articles by Paul Westran, specializing in progressed synastry. Astrology reports available.
http://www.positiveastrology.com/

Starmatch International
Dating site which offers a site tour, monthly horoscopes, member chat room and compatibility reports. [Membership Required.]
http://www.starmatch.com/

Synastry
Information about synastry, including FAQs, articles and glossary. Includes details of consultations and reports by Stephen M. Smith.
http://www.synastry.us