Mufon - Official web site for MUFON, the Mutual UFO Network. An international scientific organization seriously studying the phenomenon known as UFOs.
UFO Evidence - one of the Internet's largest sources of quality research and information on the UFO phenomenon.
Alien Observer - Report UFO sightings, explore information covering the alien and UFO enigma. Lots of links, UFO report form, paraphernalia, discussion board.
Ufo casebook - Classic UFO case files, landings, crashes, sightings, alien abductions, www.ufocasebook.com
National UFO Reporting Center - Comprehensive and up to date UFO information provided by America's foremost UFO reporting agency.
UFO Seek - UFO Seek is the most comprehensive paranormal and UFO search engine.
BUFORA - The website of the British UFO Research Association which comprises of a network of people, who have an interest in UFOs.
UFO Watch - is the best place on the web to report your UFO sightings. Includes an online database of over 250 sightings. Report your sighting now!
Ovnilab dreamland UFO - The Original UFO Anthology CD-ROM for sale. Hear exclusive, airline pilot UFO sighting audio recordings.
UK UFO - Sighting Reports in the United Kingdom sorted by County and date
Abovetopsecret - Official website uncovering government secrecy and conspiracies including - Area 51, Star Wars, NSA Echelon, Roswell, aliens, cattle mutilations, abductions, UFOs, and Dulce
*U* UFO Database - Home site of the *U* UFO Database, Mapping and Research Tool
Ufo Info - Ufo Info has regular news plus bulletins are archived on the site for research purposes. There’s also information on UFO Organizations, conferences, plus much more.
UFO Disclosure - the premier site for news and scientific truth in UFO Disclosure.
The Oz Files - Australian Government and Military UFO files with official documents and original photos and drawings of encounters with Unidentified Flying Objects and beings.
U.S. Department of Defense - Information on UFO investigations from the United States Department of Defense