The following sites are devoted to philosophy. On any of these you can find a detailed list of links to philosophers, philosophical texts, and general information about philosophy.

Episteme Links
Assorted links to philosophers, organizations, departments, books, etc.

Philosophy on the Net
Links organized into five categories: (1) areas of philosophy; (2) text-related (papers, journals, etc.); (3) organizations (departments, associations, etc.); (4) forums; (5) miscellaneous (conferences, syllabi, jobs, etc.).

Stanford Encyclopedia of Philosophy
An ambitious project, still in development. But already this has hundreds of entries on philosophers and important philosophical ideas and movements. Others will be added. The entries are written by people who are themselves good philosophers. Great resource.