[fl3x]

Edit: The numbers are only for the C implementation so they don't add much to the discussion. Sorry for posting too quickly!

I don't know about this library in particular, but there's some numbers available on http://liblzg.bitsnbites.eu/ for a similar library.

(The same author has also made a library for self extracting javascript code: http://crunchme.bitsnbites.eu/. Pretty cool, but probably not that useful outside of the demo scene.)