Alien Interactive Story: An online game with 22 possible endings. With pictures and sound clips from the movie.
All-Reviews.com: Alien: Review by Dragan Antulov : '[...] the best horror film of all times'. 4 star out of 4.
HARO Online: Alien: Haro reviews the 20th anniversary director's cut of the film.
IMDb: Alien (1979): The Internet Movie Database offers cast and crew credits, plot outline, user comments, and links.
Jurassic Punk: Alien: A collection of 9 video clips in QuickTime format. With trailers and scenes from the movie.
Movie Quotes Site: Alien: An index of quotes from the movie. Collected and submitted by users of the site.
Nitpickers Site: Alien: An index of mistakes, anomalies, and other small details people noticed in the movie.
Sci-Fi Movie Page: Alien: Review and pictures.