St. Simon of Zealot
- Very brief.
- http://www.catholic.org/saints/saint.php?saint_id=241

For All the Saints
- Hagiography of Simon the Zealot.
- http://www.saintpatrickdc.org/ss/1028.htm#simo

The Ecole Glossary
- St. Simon Zelotes, sometimes called Simon the Less. Christian legend associates St. Simon with Persia or England.
- http://www2.evansville.edu/ecoleweb/glossary/simonz.html

James Kiefer's Christian Biographies
- Profiles of SS. Simon and Jude, with prayer in traditional and contemporary language.
- http://elvis.rowan.edu/~kilroy/JEK/10/28.html

Catholic Encyclopedia
- St. Simon the Apostle, also known as St. Simon the Zealot.
- http://www.newadvent.org/cathen/13796b.htm

Lives of the Saints
- From Alban Butler's Lives of the Saints.
- http://www.ewtn.com/library/MARY/SIMON.htm

Vietnamese Eucharistic Youth Society
- Short, suitable for children.
- http://www.tntt.org/vni/tlieu/saints/St1028.htm

Patron Saints Index
- Illustrated, with links.
- http://www.catholic-forum.com/saints/saints07.htm