http://www.epistemelinks.com/index.asp NOTE: Sadly, the long list of Episteme sites (including some really useful categories) was severely edited down. and the remaining links are no longer being maintained. Active links still useful, but you may find broken links as time passes.
Useful, clear articles for undergraduate level philosophy, including synopses and lists for further reading. Cross-indexing is largely absent, so you have to know, alphabetically, what terms/names/articles you are looking for; then find with the alphabetical links, or do a Google-like search for your terms.
An introduction to Spanish Philosophy in Spanish in the SlideShare format, with links to other SlideShare presentations of information about a number of philosophers. Authors may be students or teachers, so ... cum grano salis.