Plant Diversity: The Conifers
- Information and photographs of several gymnosperms that grow in the wet tropics of Australia.
- http://www.wettropics.gov.au/pa/pa_conifers.html

Arboretum de Villardebelle
- Includes photographs and information on conifers from around the world, gymnosperm taxonomy, and scientific articles.
- http://www.pinetum.org/

Native Conifers of North America
- Key, descriptions of all genera and species, images, and range maps.
- http://www.nearctica.com/trees/conifer/

Phylum Pinophyta: The Conifers
- General description with photos of selected representatives of the included families and genera.
- http://www.science.siu.edu/landplants/Coniferophyta/coniferophyta.html

Gymnosperm Database
- Basic information (sometimes only a name) for all species and higher-ranked taxa of the gymnosperms, including conifers, cycads, and their allies. Includes many images.
- http://www.conifers.org/