Ask HN: Central location for cursory algorithm research?

Is there anywhere on the interwebs that allows you to look up an algorithm (or scroll through a list of some sort), to see a brief overview of its basics (creator, what its used for, etc)?

Example: I go to [website.com] and type "Diffie-Hellman", then get a small blurb about the Diffie-Hellman key exchange algo.