Other
Zeno of Citium: Founder of Stoicism
A biography of Zeno, founder of Stoicism. Also discusses the theories of Stoicism. Included a nice set of quotes from Zeno, passed on through other ancient authors.
Internet Encyclopedia of Philosophy
Internet Encyclopedia of Philosophy: Hipparchia
The interesting life of ancient Greek philosopher Hipparchia is told here in some detail. References for further study are included.
Other
Diotima: The Life of Hipparchia
Incidents from the life of Greek philosopher Hipparchia are featured on this page from Diotima, publisher of "materials for the study of women and gender in the ancient world."