Marvel Database Project
- Online collabrative collection of Marvel and DC comics information organized by fans. Features gallery of comic book art and project forums in addition to the contributed articles.
- http://www.marveldatabase.com/

Marvel Value Stamps Index
- A guide to the Marvel Comics Stamp Book program which ran during 1974-1975. Offers gallery of stamps, books, and covers involved.
- http://www.mvstamps.com/

Marvel Atlas Project
- An effort to catalog the many different locations throughout Marvel's Earth and correlate these with their appropriate locations on one of several maps of the real Earth.
- http://www.aub.dk/~henckel/map.html

Arthur's Marvel Comics Reprints
- Listing of Marvel Comics' Silver Age Comics reprints, providing a reference for collectors and Marvelites.
- http://www.math.ucla.edu/~alee/reprints.html

The Marvel Chronology Project
- Chronological listings for every character in the Marvel Universe.
- http://www.chronologyproject.com/

The Second-Stringers of Marvel Comics
- Profiles of the minor characters of the Marvel Universe.
- http://www.flash.net/~jeanneb/

The Silver Age Marvel Comics Cover Index
- Overviews of the covers of Marvel Silver Age publications, with entries on month, title and artist. Also contains several sites dealing with cover scans from individual Silver-Age titles.
- http://www.samcci.comics.org/

The Professor's Marvel Directory
- Collection of resources designed similar to "The Official Handbook of the Marvel Universe."
- http://www.marveldirectory.com/

Marvel Comic Fanpage
- News, character popularity polls, and games.
- http://www.vollspackenalarm.de/marvel/