Atlas games - Ars Magica
Come to a land of adventure and mystery, of falling empires and rising nations, of legendary creatures and incredible myths. This is Ars Magica's Mythic Europe, where the power of magic is real and exists alongside historical figures and locations. Stories revolve around the covenant: one part mystical college, one part magical laboratory, one part Hermetic fortification, one part bastion of secrecy.
Bifrost Ars Magica Pages
Details of a saga set in the Stonehenge tribunal, together with descriptions of covenants, libraries and magi across Mythic Europe. Also includes some new spells, rules and libraries, as well as a brief description of an Ars Magica - World of Greyhawk cross over campaign.
Cliffheart Covenant
A nicely laid out site about Ars Magica that was originally done in Italian, but has now been translated to English.
Insula Maledictus
AnProvides characters, relations, stories, history, spells, magical items, letters, essays and in-game and off-game material.
Malinbois Home Page
Includes characters, maps of The Covenant and its library, and rules.
Project Redcap - The Crossroads of the Order
Features an Ars Magica FAQ, mailing lists, resources, and a large link collection for multiple languages.
Rabenstein Covenant
Offers characters, maps of the covenant, house rules, summary of the saga, and historical background.
Secretum Secretorum
Background for the game, contains information from a text translated from Arabic in the middle of the twelfth century.