Byzant - Esoteric Symbols
Discusses and illustrates a range of powerful and profound religious and esoteric symbols from both Western and Eastern traditions.

Dictionary of Symbolism
An online aid for exploring the meanings of symbols.

Review of Liungman's Dictionary of Symbols
Critical review by Seth Maislin, indexer.

Symbols.com
The world's largest online encyclopedia of graphic symbols, ranging from ideograms carved in mammoth teeth by Cro-Magnon men, to hobo signs and subway graffiti.