MUFON - Mutual UFO Network - Seguin, TX
CUFOS - J. Allen Hynek Center for UFO Studies - Chicago, IL
FUFOR - Fund for UFO Research - Maryland
   

Computer UFO Network (CUFON)
Richard Hall's Home Page
Project SIGN Research Center -  Wendy Connors (Pending relocation)
Project Blue Book Research Center - David Michael Hall
International Center for Physical Trace Research - Ted Phillips
 

NARCAP - National Aviation Reporting Center On Anomalous Phenomena
NUFORC - National UFO Reporting Center  - Chicago- Peter Davenport
Project1947 - Internet UFO Group - Jan Aldrich
Temporal Doorway - Mark Cashman

Project FT - Project Flying Triangle studies in the UK- Victor Kean
*U* UFO Database Website - Larry Hatch
UFO Anomalies Zone - Stan Gordon