UFOS/Aliens from about.com Guide
- Weekly features, UFO Timeline, links, latest UFO sightings, UFO sightings database, bulletin board, and chat.
- http://ufos.about.com/

UFOs
- A compendium of independently reviewed and categorized links dealing with the UFO question, also contains editorial comment and helpful micro-essays.
- http://www.mactonnies.com/ufos.html

Project-UFO Database & Search
- UFO information with web search and Database of ufo sighting around the world.
- http://project-ufo.com

UFO's and the Paranormal
- UFO sightings and paranormal reports. Extensive portal to UFO and paranormal research and resources.
- http://mysticaluniverse.com

Alien Observer
- Report UFO Sightings, explore their huge information warehouse covering the UFO enigma. Lots of links, alien and UFO paraphernalia, discussion board.
- http://www.alienobserver.com

UFOs and Extraterrestrials
- Devoted to UFO and UFO related web sites. Many areas of Ufology are covered, including; aliens, saucers, cattle mutilations, government involvement, Area 51. Has links to UFO reports, investigations of sightings, pictures, videos. Also contains a newsgrou
- http://www.greatdreams.com/ufos.htm