WARNING: This is currently under (very) active development and I wouldn't recommend using it for anything more than a demo project.
A concise, small, and fast (monadic) parser combinator library for C++11.
Parsly is loosely based on the Parsnip Parser Library which seems to be abandoned as of 2007, and is in disrepair (it doesn't even compile). Parsnip itself is a C++ port of the Parsec Parser combinator library for Haskell.