Don Coleman's Time Machine Project has documented the original 1960 MGM Time Machine prop, its restoration and appearances, fan-built replicas, museum installations, and detailed full-scale reproduction work since 1999.
Masao Okazaki's Starfleet Museum is a deep Star Trek fan-history project that presents fictional ships, wars, propulsion systems, timelines, museum exhibits, and technical development as if researchers were cataloging centuries of real naval history.
Gary W. Cooke's personal site split into anime, military, science-fiction, and weapons reference sections, preserving the kind of hand-built specialist index that search engines rarely replace cleanly.
The Lexx Domain is an old-school fan site for the cult science-fiction series LEXX, preserving fan fiction and community material from a fandom that never needed to become mainstream to remain intensely alive online.