Los Angeles International Fern Society
- Information about the society's activities, ferns, and fern allies.
- http://www.laifs.org/

Staghorn Ferns for Florida
- University of Florida provides general details on the plant including lighting, watering and fertilization.
- http://edis.ifas.ufl.edu/BODY_MG015

Nederlandse Varenvereniging
- The Dutch Fern Society offers basic information about ferns in general and several galleries of fern pictures and drawings. Site available in English and Dutch.
- http://www.flakkee.net/~fernworld/

American Fern Society
- Information on the biology and cultivation of ferns; activities of the society including a spore exchange and publication of Fiddlehead Forum, American Fern Journal, and Pteridologia.
- http://amerfernsoc.org/

San Diego Fern Society
- Information on fern culture and the activities of the society plus lists of books and experts.
- http://www.sdfern.com/

Hardy Fern Foundation
- A club established to develop a comprehensive collection of the world's hardy ferns for display, testing, evaluation, public education, and introduction for gardening and horticulture.
- http://www.hardyferns.org/