See also Adam Megacz' SBP ("Scannerless Boolean Parser") (http://research.cs.berkeley.edu/project/sbp/). Boolean grammars are a superset of context-free grammars that can do some interesting things. For example, one can write a scannerless grammar for Python that handles the significant indentation in the grammar.

Thanks a lot for the link, I'll look through it.

I also found the GLL paper at p. 113 [123] of http://ldta.info/2009/ldta2009proceedings.pdf

The SGLR parser in Strtego/XT is not state of the art, at least not for production use. It only supports pure seven bit ASCII, it is a throwback to the 1970ies.