Internet Encyclopedia of Philosophy: Diogenes of Sinope
- Biography and analysis.
- http://www.iep.utm.edu/d/diogsino.htm

Diogenes and Alexander
- Drawing by Honore Daumier (1842).
- http://www.kzu.ch/fach/as/gallerie/myth/daumier/daumier21.htm

The Cynic Philosophers
- The way of life of Diogenes, by Michel Foucault.
- http://foucault.info/documents/parrhesiasts/

Diogenes the Cynic
- A few stories about "The Dog".
- http://users.otenet.gr/~ziggy/index1.html

Ethics of Isocrates, Aristotle, and Diogenes
- An article about his life and context by Sanderson Beck.
- http://www.san.beck.org/EC22-Aristotle.html#7

A Day with Diogenes
- A fictional dialogue by Terry Ballard.
- http://faculty.quinnipiac.edu/libraries/tballard/diogenes.htm

Diogenes of Sinope
- Article and anecdotes about his way of life by Ben Best.
- http://www.benbest.com/philo/diogenes.html