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SITI ITALIANI SITI STRANIERI MISTERI E UFOLOGIA SITI CORRELATI
DNA MAGAZINE The Anomalist   NASA
CUN Archives for UFO Research (AFU)   FEDERAL BUREAU OF INVESTIGATION
CISU Belgian Society for Space Phenomenon Study    
GAUS BUFORA    
USAC The Black Vault    
UFONETWORK Canadian UFO Survey    
PaolaHarris Center for Physical Trace Research    
SpazioUfo CohenUFO.org    
Ufologia.net
 The Computer UFO Network (CUFON)    
Ufo Online Defense Intelligence Agency (DIA)    
Nonsoloufo DefenseLink    
Ufodatanet Finnish UFO Research    
Ufoitalia Fortean Times    
Ufologia.net Fund for UFO Research (FUFOR)    
Setiufo Groom Lake Desert Rat    
Alienproject The Intruders Foundation    
Ufo e Dintorni Magonia    
Misteri Ufo  Mark Cashman:  Temporal Doorway    
Alieni e Ufo Mutual UFO Network (MUFON)    
Ufonet  National Aviation Reporting Center for Anomalous Phenomena (NARCAP)    
Ufo Zone National Investigations Committee on Aerial Phenomena (NICAP)    
Alieni The Nine Planets: A Multimedia Tour of the Solar System    
Ufo Roswell  Norway's Project Hessdalen    
  Norway's Triangle Project or The Hessdalen Phenomena    
  Project 1947    
  Project Blue Book Archive    
  Space.com    
  UFOPOP: Flying Saucers In Popular Culture