Peyote51
- Features information on the history and chemistry of this plant, and links to related sites. Also offers for sale peyote cacti.
- http://www.peyote51.com/

Entheogen Dot
- Online community, and an information resource with a focus on shamanic plants.
- http://www.entheogen.com/

A Brief History of Peyote
- The divine cactus in historical context.
- http://www.peyote.org/

The Mad Hatter
- Guide to entheogen use; includes essays and information on drug laws and suppliers.
- http://www.clearwhitelight.org/hatter/

Council on Spiritual Practices - Entheogens
- The purpose of the Entheogen Project is to systematically gather knowledge about the immediate and long-term effects of entheogen use. Includes essays and an annotated list of topical books.
- http://www.csp.org/practices/entheogens/entheogens.html

Wasiwaska
- Center of studies for ayahuasca, the sacred brew of Amazonian shamans. Includes information about the center, and their seminars and presenters. Located in Brazil.
- http://www.wasiwaska.org

Plot55.com
- Provides information on the cultivation, preperation and use of entheogenic, hallucinogenic and psychoactive plants.
- http://www.plot55.com