General:

Estoicos   Crom el Nórdico. En español.

Hellenistic Philosophy   Richard Hooker

Stoic Philosophy   International Stoic Society

Stoicism   Stanford Encyclopedia of Philosophy

Stoicism   The Internet Encyclopedia of Philosophy

Stoicism   The Ecole initiative.

Stoicism   Encyclopaedia Britannica

Stoicism   Encyclopedia.com

Stoicism on the Web   D.J.H.Moore

Stoics and Stoic Philosophy   The Catholic Encyclopedia

The Stoic Place   Dr. Jan Garrett

Filósofos:

CLEANTES

Cleanthes    The Internet Encyclopedia of Philosophy

Cleanthes   Encyclopaedia Britannica

CRISIPO

Chrysippus   DJH Moore

Chrysippus   The Internet Encyclopedia of Philosophy

Chrysippus   Encyclopaedia Britannica

EPICTETO

Epictetus   The Internet Encyclopedia of Philosophy

Epictetus   Encyclopaedia Britannica

Epictetus: Biography   Garth Kemerling

Epictetus: Freedom in the Walled City of the Mind   Gordon Ziniewicz

Texts:

The Discourses   MIT

The Discourses   Virginia Tech

The Enchiridion   Internet Encyclopedia of Philosophy

The Enchiridion MIT

The Enchiridion   Sanderson Beck

The Golden Sayings   BiblioBytes

The Golden Sayings   MIT

The Golden Sayings   Project Gutemberg

MARCO AURELIO

Marcus Aurelius   Island of Freedom

Marcus Aurelius Antoninus  The Catholic Encyclopedia

Philosophy of Antoninus   George Long.

Texts:

Meditations  BiblioBytes

Meditations   Fordham University

Meditations   MIT

SENECA

Lucio Anneo Séneca  Vida, bibliografía, amplia selección de fragmentos de sus obras y links.

Notes on Seneca and Later Stoicism  Mark Morford

Seneca   Encarta

Séneca   Francisco Alvarez y Paola E Alvarez. En español.

Seneca: A Thinker for Our Times   About.com

Seneca, Lucius Annaeus   Encyclopaedia Britannica

Seneca´s tragedies   Sanderson Beck.

Seneca:tragedy   About.com

Senecan tragedy   Encyclopaedia Britannica.

Why Seneca's Moral Essays and Moral Epistles   stoics.com

Textos:

L. Annaei Senecae Opera   The Latin Library. In Latin

ZENON DE CITIO

Zeno and the Stoics   Sanderson Beck

Zeno of Citium   Robin Turner

Zeno of Citium and the Cynics   DJH Moore

Zeno of Cittium: founder of Stoicism  Paul Harrison.

Zeno of Kitium   International Stoic Society