The Internet Encyclopedia of Philosophy
<http://www.utm.edu/research/iep/>
Search by keyword, look at a timeline, read the classic philosophy texts.

Links to Philosophy websites:
http://www.comms.dcu.ie/sheehanh/philosophy/links.htm

International society for Philosophy:
http://www.isfp.co.uk/sitemap.html

Ethics Updates
<http://ethics.acusd.edu/index.html>
Designed to be used by ethics instructors and their students, but much here for the merely interested too.