Listed are some of the more popular/worthwhile substances from each family, with links through to PsychonautWiki, Erowid and/or DrugScience.

Tryptamines

DMT

N,N-dimethyltryptamine

PsychonautWiki · Erowid · Third Wave

5-MeO-DMT

5-methoxy-N,N-dimethyltryptamine

PsychonautWiki · Erowid · Third Wave

Psilocin

4-hydroxy-N,N-dimethyltryptamine

PsychonautWiki · Erowid · DrugScience · Third Wave

Phenethylamines

Mescaline

3,4,5-trimethoxyphenethylamine

PsychonautWiki · Erowid · Third Wave

2C-B

2,5-dimethoxy-4-bromophenethylamine

PsychonautWiki · Erowid

2C-I

2,5-dimethoxy-4-iodophenethylamine

PsychonautWiki · Erowid

2C-E

2,5-dimethoxy-4-ethylphenethylamine

PsychonautWiki · Erowid

Lysergamides

LSD

lysergic acid diethylamide

PsychonautWiki · Erowid · DrugScience · Third Wave

AL-LAD

6-allyl-6-nor-lysergic acid diethylamide

PsychonautWiki

1P-LSD

1-propionyl-lysergic acid diethylamide

PsychonautWiki · Erowid

LSA

lysergic acid amide

PsychonautWiki · Erowid

Combinations

Psilohuasca

oral combination of psilocin and an MAOI

Ayahuasca

oral combination of DMT and an MAOI

PsychonautWiki · Erowid · Third Wave

Atypical

Ibogaine

10-methoxyibogamine

PsychonautWiki · Erowid · Third Wave

Salvinorin A

salvinorin A

PsychonautWiki · Erowid · DrugScience · Third Wave

Substances with some psychedelic effects

THC

tetrahydrocannabinol

PsychonautWiki · Erowid · DrugScience

MDMA

3,4-methylenedioxymethamphetamine

PsychonautWiki · Erowid · DrugScience

Ketamine

ketamine

PsychonautWiki · Erowid · DrugScience