A guide to alchemy and natural magic run in conjunction with the UK Channel 4 series. Particularly notable for the excellent Crucible mini-game and a simple, easy-to-understand style and interface.
Excellent and versatile guide to alchemy with a comprehensive virtual library of alchemical texts, introduction to the theory of alchemy and a guide to practical alchemy
Internet homepage of a modern Portuguese alchemist
A rather prosaic website offering insights into the less well-known areas of alchemical science
The Society for the History of Alchemy & Chemistry; a useful repository of journal texts and other information
Website on the Golden Elixir and Chinese alchemy.