Huh. For some reason the link is broken for me (Safari). The link is using form-encoding (using a + to represent a space), but then the forum software percent-encodes it, so the search field ends up containing a literal "+" rather than a space. What's weird is that I'm literally working on an API for this right now, and this kind of mix-up is what I'm trying to help prevent.
Anyway, here's a fixed link:
As for the topic question: I don't know what the current state of the art is. I'd advise checking out the packages mentioned by the previous commenters.