A curated list of lists of awesome things.
Give this site an image file and it'll generate new style favicons. It also generates the relevant HTML code and meta tags.
A list of common algorithms in computer science, compiled at Wikipedia.
A wiki as well as a meta wiki that tries to unify different sources of information for the purposes of scholarship and easy citation. Claims that it goes back to primary sources for its constructions. Offers fact maps and topic trees, among other knowledge structures.