| *U* UFO Database: UFO maps and statistics from over 18,000 filtered sightings worldwide, for all dates. |
| Alien51: Report sightings and view them. Includes discussion boards for a variety of paranormal related topics: aliens, ghosts, conspiracy theories, and the paranormal in entertainment. |
| Arizona UFO: Arizona UFO, Phoenix lights, unexplained sightings, and phenomena in Arizona. |
| Kecksburg PA UFO Incident: A petition for information disclosure regarding the Kecksburg Pennsylvania UFO incident. |
| Massachusetts UFO Resources: A comprehensive source for information on UFOs in Massachusetts, including sightings, and report databases. |
| Project Hessdalen: In the area of Hessdalen, Norway, a luminous phenomenon was occurring with strong recurrence. The Project Hessdalen is a scientific research project for the study of the phenomenon. [English/Norwegian] |
| The UFO Organisation: Concentrates mainly on sightings and how to report them, but also has general UFO information. |
| U F O Nut: This site contains pictures and descriptions of historic UFO sightings and annotated links to current UFO observers. |
| UFO India: Reports UFO sightings, SETI, paranormal phenomenon in India. Also publishes articles, and news on related subjects. |
| UFO Map: The Empty Quarter of the Sea: Out of 18,100 UFO sightings in the *U* Database, none fall within a huge area of sea shown on this map. |
| UFO Over Whixley North Yorkshire 1977: Description of a UFO sighting over Whixley, near York, North Yorkshire, UK in May 1977. |
| UFO Sightings Over New England: A collection of UFO reports regarding the 6 New England states of New Hampshire, Vermont, Rhode Island, Maine, Massachusetts, and Connecticut. |
| UFOrce: Flying saucer reports and alien encounters. The extraterrestrial hypothesis is explored. |
| UFOs Over America: Dedicated to information about UFO sightings, photos, stories, encounters, links. |
| Unexplainable UFO Pictures And Information: Reports, sightings and an interactive supernatural message board. |
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