As of a fairly recent (pre-Glass) interview I saw with Thad Starner, he was still using it. The interview must have been in 2011 or 2012. However, I've never seen the code for any of these things.
That said, RA (as documented) was a quick elisp hack -- so, you could hack up a similar thing in your language of choice for your editor of choice. (I think the use of elisp was dependent upon the fact that you can -- and many people do -- do everything inside emacs ;-)
