Wow, I had no idea that such a thing existed. That is far more feature-rich. Thanks for posting it.
However, one advantage (or disadvantage depending on your P.O.V :) ) of the Clojalyzer is that it's not tied to Clojars. So, for instance, if you have a Java project with a single Clojure script in it, you can Clojalyze that. While it is tied to Github, that's not fundamental to how it works and I plan on improving it soon, to also allow copy/paste and fetching from other urls (at the very least).
I can pull doc strings in Vim by moving my cursor over a function and pressing K with fireplace.vim. I imagine Emacs has something similar. I get a list of functions with taglist.vim.
A typical emacs setup includes a keybinding (C-c C-d) to display the docstring for the function under the cursor, as well as the invaluable "M-." to jump right to the function's source definition.