Cees de Groot's Contax SLR Page
- Specifications of Contax SLRs from the 1970s to the 1990s, plus information about the Contax/Yashica mailing list.
- http://www.cdegroot.com/photo-contax/

Contax RTS, RTS II and RTS III
- A system overview of the three flagship SLR camera models. Includes a message board.
- http://www.mir.com.my/rb/photography/hardwares/classics/contax/index.htm

The Contax G Pages
- Product reviews, competitions, forums, hall of fame, and photo critique for enthusiasts of this rangefinder camera system.
- http://contaxg.com/